First suggestion: Like in Single Player Gyms, these Gyms should have Trainers. Makes practically everyone who wants a group to join. BUT, these trainers are allowed not to have NFE pokemon like SPGyms, and have to have at least 4-5 pokemon of their type, 1-2 counters. and you can't skip any of them. Makes more of a Changellenge. As always, no Ubers.
Second Suggestion: like in smogon forum can we have raters and tutors?