I voted for RW packs, but I also think that only Modern should have "jackpot" prizes... and RW packs might be useless to someone who only plays in Modern. A single pack isn't exactly much of a jackpot. I remember when people were getting like 50k (or more) SPS and stuff. That said, we still have to be careful how much we give away in chests, and I don't think we should give them away to bots. I say that as someone who runs a bot in Wild.