Did you state that the club is more than just "watching anime"?
I stated it in the application as an activity, and I very obviously put other things as goals. The application form is way too limited..., and there was too much bias. Good thing for appeal, because if they don't accept this club after my arguments, I think they would just be plain discriminating against us. And they wouldn't want that to happen. My arguments are as follows:
By participating in events together, we have a greater sense of community, and are not limiting ourselves to a certain group of friends etc.
Eg. Clubs like "Fitness Club" don't need to necessarily form a club in order to participate in those activities.
We're not just about watching anime, we have a lot more of other activities (doujinshi making, discussion, going to a restauraunt?, contests) and learning opportunities (cosplay, aspects in anime, japanese, teaching some drawing)
I think that should be basically enough to convince them