You do know that depending on how you count, you will get completely different results?
Lets say for Hearthstone, we count 2 commons, 2 rares, 2 epics and 1 legendary of each type as complete collection, each expansion lasting 4 months, getting 60 gold per day (daily quest, assuming easy quest aka 50 gold + 3 wins to complete the quest, excluding events etc.) you will get ~6700 gold, which is 67 packs which guarantees you atleast 2 legendaries (excluding the free legendaries you get and other packs you get), with 5 cards per pack, on average you would get 1 legendary every 20 packs and the average joe will get 3 legendaries (they are also guaranteed to be different), 13-14 epics, 66 rares, and hundreds of commons, this will result usually in you having half of the epics, only 3 of 23 legendary, a really high chance to have every rare once, and a decent chance to have most key rares (as in rares being played) atleast once or twice (there are 36 rares per set btw), while you are basically guaranteed to have every common
Now 49+49+ lets say you got 22 rares twice, rest are duplicates, so 22+22, no duplicates in the epics, and ofc. no duplicates in legendary (because that is impossible anyway) Golden cards are not included in the calculation at all, that will throw you out at 64% of the entire set, if we slightly tweak the odds and say you never got any duplicate rare, you are at 73% of the entire set, if we were to include the dust you got from the duplicates, and potentially golden duplicates from for example commons, and gifted cards, and rewards from tavern brawls, free arena runs, more free gold you got, event quests, free legendaries (every expansion atleast throws out 1 free legendary) you will easily reach more than 75% completion
Anyway, i am a HS player too, and i havn´t bought any packs, yet i still always get atleast 80% of every single set, with leftover dust, that i use to craft potentially missing key cards in decks i want to play
Now don´t get me wrong, im not trying to really defend hearthstone, i just wanted to make it clear that even though 75% of a set completed sounds nice, but there are a lot of information missing in that post, is it 75% of the set completed included wildcards gained through shards used on cards? Is it just calculated with average luck, are there stuff like "pity timers", because you can easily juggle numbers around (just look at the example above for hearthstone, you will get 75% of the set, yet you can´t play a lot of decks atleast if decks need core legendary cards, that is if they are real core cards, stuff like ziliax, or leeroy jenkins aren´t true core legendary cards, despite them seeing insane amounts of play, is especially the case for midrange/combo and control decks, aggro/tempo decks rarely have real core legendary cards, most legendaries in there are just in there because they excel at it, they aren´t necessary to play the deck succesfully, they will usually just increase winrates by like 0.1% to 1%, in some cases even drop the winrate, due to winrates being skewed by people copying decks without knowing how to play them)
Anyway, im still excited to play the game, i had quite a bit of fun playing in the first preview build, but i can already imagine how false all of your hopes will be especially regarding champion cards, atleast if you want to run a optimal build you will need the same legendary probably 3 times, and another different same legendary also 3 times, that will probably be absolutely impossible, so im imagining rn. that we will probably get a similar situation to hearthstone, where you have a ton of cards, but you just don´t have some of the core game mechanics, for example you lack 3 fioras, you only got 1, or 3 teemos for example, or something like only having 1 draven etc. etc. etc.
Tbf. i havn´t checked how many things you start with, so i have no idea about how bad it will exactly be, but just remember, that you can easily play with numbers to make things sound better
You do know that depending on how you count, you will get completely different results?
Lets say for Hearthstone, we count 2 commons, 2 rares, 2 epics and 1 legendary of each type as complete collection, each expansion lasting 4 months, getting 60 gold per day (daily quest, assuming easy quest aka 50 gold + 3 wins to complete the quest, excluding events etc.) you will get ~6700 gold, which is 67 packs which guarantees you atleast 2 legendaries (excluding the free legendaries you get and other packs you get), with 5 cards per pack, on average you would get 1 legendary every 20 packs and the average joe will get 3 legendaries (they are also guaranteed to be different), 13-14 epics, 66 rares, and hundreds of commons, this will result usually in you having half of the epics, only 3 of 23 legendary, a really high chance to have every rare once, and a decent chance to have most key rares (as in rares being played) atleast once or twice (there are 36 rares per set btw), while you are basically guaranteed to have every common
Now 49+49+ lets say you got 22 rares twice, rest are duplicates, so 22+22, no duplicates in the epics, and ofc. no duplicates in legendary (because that is impossible anyway) Golden cards are not included in the calculation at all, that will throw you out at 64% of the entire set, if we slightly tweak the odds and say you never got any duplicate rare, you are at 73% of the entire set, if we were to include the dust you got from the duplicates, and potentially golden duplicates from for example commons, and gifted cards, and rewards from tavern brawls, free arena runs, more free gold you got, event quests, free legendaries (every expansion atleast throws out 1 free legendary) you will easily reach more than 75% completion
Anyway, i am a HS player too, and i havn´t bought any packs, yet i still always get atleast 80% of every single set, with leftover dust, that i use to craft potentially missing key cards in decks i want to play
Now don´t get me wrong, im not trying to really defend hearthstone, i just wanted to make it clear that even though 75% of a set completed sounds nice, but there are a lot of information missing in that post, is it 75% of the set completed included wildcards gained through shards used on cards? Is it just calculated with average luck, are there stuff like "pity timers", because you can easily juggle numbers around (just look at the example above for hearthstone, you will get 75% of the set, yet you can´t play a lot of decks atleast if decks need core legendary cards, that is if they are real core cards, stuff like ziliax, or leeroy jenkins aren´t true core legendary cards, despite them seeing insane amounts of play, is especially the case for midrange/combo and control decks, aggro/tempo decks rarely have real core legendary cards, most legendaries in there are just in there because they excel at it, they aren´t necessary to play the deck succesfully, they will usually just increase winrates by like 0.1% to 1%, in some cases even drop the winrate, due to winrates being skewed by people copying decks without knowing how to play them)
Anyway, im still excited to play the game, i had quite a bit of fun playing in the first preview build, but i can already imagine how false all of your hopes will be especially regarding champion cards, atleast if you want to run a optimal build you will need the same legendary probably 3 times, and another different same legendary also 3 times, that will probably be absolutely impossible, so im imagining rn. that we will probably get a similar situation to hearthstone, where you have a ton of cards, but you just don´t have some of the core game mechanics, for example you lack 3 fioras, you only got 1, or 3 teemos for example, or something like only having 1 draven etc. etc. etc.
Tbf. i havn´t checked how many things you start with, so i have no idea about how bad it will exactly be, but just remember, that you can easily play with numbers to make things sound better