We actually do support paging, browser back functionality and bookmarkable URL's. The ajax operations, like paging on posts page, use the Hash portion of the URL for navigational state. The easiest place to see this in action is playing around with the filters on a forums list of threads page.
For example, here's a bookmark for the Bugs Forum Filtered to Unanswered questions Only, Page 1
http://forums.msdn.microsoft.com/en-US/reportabug/threads/#page:1;filter:unansweredThe thinking with the popup editor is that it allows you to still get to the posts or threads while the editor is up. Let's say you are viewing a thread with a few pages of posts. Click reply and while the editor is open you can quote from a post on page 1, navigate to page 2 read some more messages and maybe quote something from there and so on. Also if a new post occurs while you are reading or responding, it'll be added to the end of the posts list.
By image support, are you asking for the ability to upload an image/file? Or being able to add an <img/> to the post whose location is elsewhere?
I'll make sure we get a issue entered for the editor control issue.
Thanks!
Rob J
Oh dear.
