The only fix that should be done to mulligan is that second player shouldn't get to mull all 4 cards.
Oh heh you are right. Correct in even it is played with mossy.
Curse of weakness sees play in some even decks, combined with Void Ripper
So this is good in control warrior, and the reason for that is that control warrior plays control pretty differently than the other control decks. It has enough armor gain to sacrifice several turns of inaction, so that it can efficiently remove many minions in a single turn. I've often done nothing on turn 7 other than armor up, and I definitely don't feel bad about shield block and armor up, which is 7 armor gain. You brawl the next turn, and then for the rest of the game you have a much better than average hero power and rushing mechs.