For the free weekend I mostly played as D.va and the engineer dwarf dude. D.va was OK for t hose big nukes, also most of the tank characters seem to have really weak annoying guns that aren't fun to use.
The turret play was much more fun, going around giving armor, finding the best spots for turrets and keeping them up. Got a lot of 10+ kill streaks with him.
Overall though, I think one weekend is all I need from the game. It is fun but I'm just not into the repetitive play of online multiplayer shooters any more. Considering I have been playing them starting with Quake 1 and its mods like team fortress, through Q2, Tribes, CS, etc.. I'm done, Gus