I think a paid support option would be nice. If you are a serious developer, and not just a hobbyist, you would likely take advantage of that. That would also encourage people to do there own research so they can save money instead of spamming the forums and AnswerHub. Otherwise, when you are stumped, you pay. I think that is a good idea. I know that is what Crytek is currently doing and I have been taking advantage of that. It’s rather nice actually. You get to talk to the staff about any issues you are having. Which for that engine is even more appropriate.