Psylocide
[09] Warrior
I would have to say no. Like Franman stated, there were a lot of balance issues in SCIII, in 4 they tried and succeeded in ironing some of those out. Not to say balance issues don't still exist, (obviously) but it seems like much less of a stretch between tiers than 3 was. As for online being the main focus, I don't know of a fighting game whose main focus is online. Lag in fighting games will always be a gripe and there is almost always lag when you are playing online, no matter the game. But in fighting games lag seems to be "intensified" because of sketchy timing of inputs, blocks, etc.