[quote=@Shienvien]
<Snipped quote> I personally would like the option. (As said, everything that isn't the bare minimal core feature should be opt-out.) That, and on the assumption that most people are reasonable enough beings, managing a list like that would be a nuisance rather than useful. 

Or perhaps divide it into two thusly:
*Full management (add/remove)
*Restrict only (auto-add/bar from IC-posting)
[/quote]

The two options you presented seems reasonable. I think it would even be reasonable to go with the last one as default. Requiring approval to post ICly is usually an "on your honor" piece at the moment. The Restrict Only option preserves this, which would facilitate easier player entrance in groups that aren't so strict about character approval by a GM (like if peer review is good enough). Any problematic players can easily be dealt with by Restrict Only, and if anyone posts before they should, a GM can just get a mod to deal with the post. 

I like it.