Before a problem is first submitted, the 'preview' shows the problem and the solution on the same page for review before submitting the problem to the queue. Thereafter, you can only edit/view one of them at a time. I think, and I'm not sure how you would implement it, really, that it would be much easier to tweak problems and keep them consistent if you could see both at the same time. Just a minor thing, but it's rather an annoyance to have to click back and forth to make sure the solution correctly addresses the problem posted.

Yeah, that would suffice as well, and I'm sure be a lot easier to implement. Good idea. =)