RE:
... someone must have at least attempted this by now.
You're the first one I know of that has wanted to do this. That fact could have some significance, but I couldn't say what.
I chose the wrong platform and tried like hell to make it work, only to find broken promises and thousands of dollars and hours wasted. I couldn't adapt the software to the changing needs of my niche and lost it.
Now it's time to re-tool and focus on what did work, unfortunately it was nothing dolphin had to offer.
I had started my community with a mash up of wordpress and phpbb, it worked incredibly well for my users but there were major performance issues. Moved to dolphin thinking it was a good idea, only to find a loss of interest likely due to an overload of mods and features and a major disconnect between social activity in dolphin vs the orca forums.
So, long story short - I've got nothing to lose and bbpress looks promising for my needs :)