User blog comment:MartianManHunter14/When is a good time to have an All-Stars Season?/@comment-5297614-20140715111739

Fifth season seems good. It depends on the scope of yur cast. If you want as many returnees from varied seasons, hold it back some more. Season ten is ideally where I would place an all-stars season (I have eight more to work on, so it all depends if I want to do more), but it's up to you, really.