You know, Statesman, releasing your product to your servers in a stable manner is your job and has nothing to do with the test server or people who played on the test server.
As for the release, yes, it was the smoothest release your team has done, the servers crashed very little, and uptime was around 90% as compared to about 40% with previous releases. This is a great improvment.
Now, as far as the content of I5, it's quite stinky, but you weren't gloating about that one.
You see, there "were" good power sets that people loved to play, and there were not so good powersets that people wanted improved, and like some sick implementation of "Harrison Bergeron" you gutted the great powers and did nothing with the weaker sets.
I guess if you've a vision of balance, that is one way of implementing it; and quite like Vonnegut had suggested, it does lead to balance, but not to happiness.
Honestly, you guys need more professional help in regard to game balance design.
Not that you aren't trying...
but grats on releasing I5, after all, that is what you were talking about.