I feel what you're saying in this thread, OP. I've seen the same with my realm on WoW for the past few months - nothing lasts forever, as much as you'd wish you could go back to the good old days.
Some have left, some just lost motivation but are still around. Perhaps the surge of ideas is simply over.
However, there'll always be new people, as times moves on. Things won't be the same, but that doesn't mean that everything is gone. On WoW as of the past few weeks, I've seen activity rising again, with new people joining in and a few of the old ones coming back. The same can apply to the UI community.
MoP is sure to draw the attention of addon authors at least, because they'll need to fix everything once again.
Unnecessarily lengthy reply perhaps, but the "good old days" are always something that matter to me.
