If play with 3vs3, every team should have a general, to supoort for example 2 assasins. I prefer generals(oak,in this case), not only because of minions, but because of supoort they do,saving a friend with a shield,etc. Assasins with a good general, are killing machines, i most of times get the assist from a kill. A Ub with oak , omg, very good, the speed, just beatifull.
I really think that the 2 cattegories, should be as it is...it´s my opinion.... 