Bugs found in beta are still around, races aren't balanced, ability/buff issues, performance issues, new galaxy forge issues
Well, you know how it goes. Workers go into BETA thinking 'hey, so Im going to do some balance work' and then find that desyncs stop the game from being played. And so they work on the major issues and find them cascading into all sorts of others, and manage to fix most issues before they have to release.
Then, supposedly, right before release, someone was supposed to click his heels and balance everything, make better abilities, make it run better than they spent a month getting the game to, and fix issues that havent even come up yet. I get the argument.
Doesn't Starcraft still do balancing, even months after release?