Ah good job on doing those pages my friend, I gotta say I also think working on the Wiki is sort of fun! As for your question regading Wikidot or Wikia, I'm not the correct person to ask since I'm just helping out with the site Sycraft created some time ago.
As for the talk pages, do you mean comment boxs? I'm no master of working with a Wiki (this is first time I've used) but I believe I saw that adding comment boxes for users is possible. If you go to Help and look for Wiki Syntax you can find all the things you can add into pages, its very detailed and I've used it a bunch of times.
Once again gj man, couple more people that can contribute information and this Wiki will be full of information in no time