I don't see a board for this, so I'm not sure if the staff is open for ideas, and I see no way to e-mail them, but what the hey, lets post some ideas here!
Accelerate: when you turn it on, let it stay on.
Rather then just a bar for levels, maybe we can get some numbers too?
Timing out/Quitting, its cool the way it was changed, but I still like the bot idea, that way if you're not just being lame and you had to go, you might still be able to come back and finish.
Guilds now as far as I can tell do nothing, how about adding a "guild" option in the buying/selling of cards, or even add a guild bank for clintz?
Elo mode, I'm level 23 and my deck is a legal
elo deck, but I don't want to do
elo fights, maybe add in something to turn it off?
I'ld like to have a card made and I have an idea for it that I think more go nicely for a
Leader card, any chance of that happening?
Timing out: An option to keep waiting would be nice too, I've been teaching friends how to play only to have it time out mid-lession/match.
I think that's it for my ideas, I might have more later, and if the staff lets this message post, I think it'll be great if others shared their ideas too!