I don't recall them ever hiding from the vamps or the Wakandans. Neither are an issue right now, since both have been decimated.
Sadly, we don't know how many Atlanteans are left or where they are at presently, because basically Marvel doesn't care.
I thought the underwater Vamps were an ongoing issue after curse of the mutants but it's been awhile since I read it.
I bought the first few issues of Bendis UXM and ANXM expecting some resolution / fall out from the Phoenix 5 stuff for Namor, but gave up when he didn't get mentioned at all by Bendis. Not even Emma! Do you know if that changed? If so, what issues?
I'm torn about Bendis using Namor. Most the time he does a good job, even if the story doesn't make any sense. But there have a been a few times where his Namor was awful.
If Namor is going back to the X-Men, I really want him to have his own storyline, and not just be a third in a triangle.