Allow only single discussion on wiki index
There doesn't seem to be a way to have only a single discussion on the wiki index. There is an option to turn of comments or to turn them on, but not an option to only allow the main discussion.
I would also like to request that there's a global switch to only allow a single discussion per page on every page. If added, turning this on should hide the Current discussion: Main discussion text, since it'd be redundant.