You want S2 to release heroes at a slower pace?
Play banning modes if you hate "OP" heroes.
It's kind of hard to say what S2 should do. A lot of the things they should have done, should have been completed at retail. (Dream, Custom maps, remake, bots in channels, better mod integration)
Along with the features that should have been already made, they still have to release new content and balance everything.
Then if you read the bug report forum, it takes like 1-2 months for them to fix a typo in the skill description or flavor text.
And they have 35 people working on this game.
God damn stop giving this company money. They're run so fucking poorly. One can only imagine how shitty this game would be if Icefrog didn't help them out at the beginning.