We are moving to vbulletin in the next 15-30 days.
Post Rating will be included.
Collapsing Threads will be included.
Not sure about your third suggestion, I'll look into it.
There will be a few hiccups with vBulletin, most notably everyone will have to reset their passwords. Some threads will also get bumped when imported and some posted images will disappear. We're working to make it as smooth as possible.
Tapatalk will be installed on the forum.
Not sure about a whiners section.
Categories for specific cameras, that may be required and I'll think about it. The issue is moving current topics to the new boards.