Just maybe a decent starting point for leads is already at;
http://www.tiddlywiki.com/#Examples
I also recall seeing other compilations a few years back. I think
tiddlywiki.com contained a list of what was then called "flavors" or
that might have been a list in Mr. Simon Bairds monkeypiratetiddlywiki
(mptw, itself a flavor, I guess) or maybe it was a showcase of TW's
hosted at his tiddlyspot server.
If I understand you right, you have not formulated your academic
'problem' yet. How about conducting a little poll here in the google
group for suggestions, just to give you ideas for a thesis. Since you
wish for it to be *about* TW, I'd assume you wouldn't mind for it to
be valuable for the development of TW itself.
If you're in the hood of the Osmosoft gang, maybe you could ask to
investigate how it has been integrated at BT?
If you, in deed, hope for it to have some effect on very TW design,
then doing something in collaboration with the actual central
development team (the decision makers) is probably a good idea.
Or maybe some of the generous plugin developers in here have some
questions that would help them in their generous efforts?
Personally I think your suggesed question "Are TiddlyWiki adaptations
too complex for the average user." is interesting and would love to
throw TW at some interface ease-of-use design expert. Or how about a
quantative and comparative study, introducing new users to TW and
other 'competing' personal CMS alternatives and evaluating e.g ease-of-
use, desired features, intended applications etc etc?
Sorry, you got me ranting ;-)
/Mat