BG quests are annoying

This week I rerolled the "deal x dmg to minions in BG" to get  "finish top4 in bg". I rerolled that into "spend 500 mana". Now I rerolled another quest (5 wins BG, Duels, TB) and got "deal x dmg to minions in BG" AGAIN!

I can't play BG. All my clients (mobile, Windows VM) are so slow that the rope is halfway done, when I enter Bob's Tavern. 

I know that some people play only BG and they are happy about that. That should not be changed. But if they don't play ranked then they can reroll this into sth. which isn't ranked quest. But as non BG-player you can't avoid BG quests! Why are BG rerolls not rerolled into non-BG-quests?

Yeah, even though I play both BG and ranked (so seldom any problems completing the quests) I wholeheartedly agree. The problem is that on the one hand, weekly quests cost too much time to be spending in modes that you don't enjoy, but on the other hand, simply offer too much XP to ignore.

It would be great if you could select a 'primary mode': Ranked, Casual, Battlegrounds, Arena, or Duels and got your weekly quests from a pool that at least can be completed in that mode.

With that being said, rerolling 5 wins in BG, Duels, or TB (and Arena is in there too now) means that you willingly take a risk. Certainly not the best quest if you prefer constructed, but at the same time you know that the current system is what it is. So if you are rerolling a flexible quest you could end up with one of the 2 strictly-BG quests.     

It's actually an area they could innovate and make the experience better. Like I get wanting people to try the other modes out but outside of game changing updates or expansions,  most people are just in and out and they likely aren't enjoying the game while they force a mode for some xp.