My proposal outline (simpelst): * Have a "Post comment" button * That adds a comment you write in a blank edit box, attaches your signature, date, etc. * It also inserts some tag in front, to keep track of "who answered what to whom" * All that is added/inserted into the talk page * The talk page is still wiki-editable * Every comment contains a "Reply"-link (part of said tag) which opens an edit box (see above).
We'd be adding some tree-like structure without losing the wiki way.
Magnus
P.S.: I'm too busy to code something like that in the next few weeks ;-)