Do you think they might patch some of the grinds down a bit? I mean, turret and air drone are doable, but grindy. But buddy drone... you can play three matches with it out all the time and not get a kill with it. It's useless...
I personally got Spawn Beacon and Revive to their max level within a day of playing. It's just how I roll. I can't play Assault or Scout for toffee, though. Kamikaze charging into a group of enemies guarding an objective and stunning them all as assault and then watching them all fall to your teammate's fire is fun as hell though.
Scouts, though. As useless here as they are in every other multi shooter. Ban snipers! They do nothing!