The only thing that is still anoying ist the diff single<>multiplay.
I personaly think the game drifts towards single play. Not so bad, as i always prefered to go single while i have no need to wait for others.
But progess favors multiplayer to get your gems high factored. Shame. I dont't want to be be dependend on others.
Currently (as solo player) you are punished. Running 4 donks favors the game xp/speed/rank wise. Thats a fail.
Ah well. The game is great. Fix Single vs Multi and its a (no more no less) a funny grind game.