I'm also in favor of moving to a different host/server.
Some of us have been saying it for years actually.
My main concern has always been the threads and history we have here on this board. We can't duplicate everything on to another host.
But if the majority of active posters are happy to literally restart on a whole new host, I'm good with that. Not that it will be an overnight operation either way.
I wouldn't mind moving to a Wordpress based forum like bbpress. Proboards looks a bit dull, honestly.