To me these are issues, not always code but still issues, that needs to be addressed, discussed and fixed. A list like that in a wiki quickly get out of sync with the work of the project and is not suited, in my head, for this kind of information.
Well, I personally think they both should be moved into the issue queue. I see no reason why "only" severe bugs/features should live there. They just end up as dead documents in the wiki.