I hope that I never see mill style decks return to a point of prominence in this game, it is a boring play style. Like a little girl sitting on the other side of the fence not showing her face but throwing stones.
And one could argue that melee rush decks require the tactical finesse of an inebriated clown. Like two teenagers playing a game of chicken in their parent's car without brakes. But I digress.
To respond to jaja, lets get something straight - Ao Shun is NOT useless - his buddies are. Omnimind is not OP, GI is just overall a way better faction than DoD. If DoD wasn't laughably bad at stalling then Ao Shun would see far more play and be incredibly useful. As it stands, its just way easier to make cards more powerful or all around stronger with GI than to increase their toughness. Look at some buff comparison's.
Tinkerer - +3/+3 every turn for 1 cost
Daode - +0/+3 every other turn for 3 cost
Okay so sure Daode gives the buff to all your creatures, but the 3 cost also slows your tempo and gives you no offensive benefit. Against even one card that single card will be gaining 6 power to your 3 toughness and ultimately will simply outpace your defensive bonuses.
Daode's Protection - +0/+2 for 2 cost
Lucca - +3/+3 for 4 cost and you can CTA her (for 2) for an additional buff
The problem isn't that Omnimind is too powerful of a card, the problem is that DoD is just bad at being able to stall. I'll confess I like the longer games and DoD simply cannot stall as well as CoV or GI. Its also way too easy for FD to push out of the way, OOS can just fly over your head, and Sleepers can simply overwhelm them with numbers and om-nom corpses if they need morale.
CoV can be stall + removal
Gi can be stall + buffs
DoD is stall + half-buffs