You think HR and community management are related to solving code bugs? Umm...
Dota 2 never had a team in excess of 50 people; even at its largest, Dota 2's team was smaller than CoH2's. Again, you think more manpower is going to help CoH2 because...why, exactly?
Regarding the state of Dota bugs: http://dev.dota2.com/showthread.php?t=127919
You linked to a blog about a bug fix and used it to complain about Relic not fixing bugs. Now you're talking about balance, as if the two are related at all in terms of who works on what. You're fairly clueless aren't you?
yes, not directly, but yes. HR is fairly indirect but communities manager is pretty obvious: they compile the issues and take them to the people who deal with them, ideally sorting them by importance as best they can. i don't think that's the choke point here but it does relate.
because they either don't have enough people to do the job or someone(s) is incompetent. or possibly both.
bugs and balance are not the same but they often have the same outcome to the player. bug also have an affect on balance. the people dealing with bugs don't necessarily care a whole lot about
the balance but the balance guys damn well better care about the bugs.
my point about the blog was that a very obscure bug finally got fixed; CoH2 has a shit ton of bugs that are not obscure and have not been fixed, some of which were introduced seemingly at random.