i am sure this has probably been suggested before, but i just wanted to voice it again in case if anyone else might be interested still.
how about nation-specific forums? like chinese arts forum (kung fu, kenpo), japanese arts forum (karate, aikido), korean arts forum (taekwondo, hapkido), south asian arts forum (muay thai, some indian arts maybe), and western arts (boxing, kickboxing, capoeira). and there should be grappler specific forum as well (wrestling, judo, bjj). the sword forum could be replaced with weapons forum, just to be more inclusive. martial arts general and jeetkundo forum can stay as they are.
please feel free to point out any nation/arts i've omitted or misplaced.