I've been working on getting Fireboard BBCode to agree with tinyMCE. Check it out here:
Gossper.com
Postings are stripped from all html tags after entry, bbcoded, and stored. It works okay now but it was a hassle to implement because of the erratic way in which Fireboard handles bbencodes/decodes. I can't even remember how many files I had to edit. I'm guessing this would be the reason why a wysiwyg HTML text editor plugin for FB is not going to come out anytime soon. Too much work.
Comments and suggestions welcome,
P.