The main question about 3.0 are two:
1) Do we get finally the modification of the damage formula so that damage/resistance/hp matters way more than they do now? (aka do lightning blitz team cease to nuke everything on par power? also tank teams that should be made exactly to endure them and right now don't do?)
2) Do we get the new arena so that ceases to be impossible to reach sage of six paths rank?
Other things are mostly secondary, but i'm looking forward this.