Yeah right, let's use a wiki software that converts one linebreak into nothing, and two linebreaks into two linebreaks, making formatting a pain!
Oh also, if I used MediaWiki, everyone'd have to register to the wiki again. Basically it'd be like the old Kuribo64 with its blog. Or perhaps not, if MW's user data structure isn't too complex...
Page links will be implemented. And for redirects, I'm considering it. Viewable page history is also in the list of planned features.
Anyway, here's an example page made with this wiki system: RARC