RP rules were not even a subject in the matters that lead to the massive loss of members, as I recall. It was more a matter of everybody really disliked Dark, his actions, his character, and so on; also, the matter of him turning the site into a gaming site more than a RP site was none to pleasing.
As for RP community, they seem to be inactive. Most of the Rokkers seem to be either playing games, revitalizing their RP-world-thing, or role-playing at GamerIsle - for god knows why since I thought they hated that place. Gath, Kamica, Arafor, Zan, and RpGal are still with us, however everybody in general seems to have gone inactive ever since the summer started, myself included. What little time I do have I'm usually working on projects for Xlightscreen's site or developing other RP concepts that are structured for play on multiple sites.
Uh, I'm not sure if you have kept up with affairs, but I'm no longer with Dark and his site. Immortal Players is the name of a site - now defunct - that is being sold, here. The Hive Cluster - whose URL is being parsed by this message software - is Dark's current site, which may be the site you are looking for; http://www.the.hive.cluster.com/forums/, minus the periods between "the," "hive," and "cluster."
I can of course give you the URLs for the current sites I am at, if you so choose it; I dare say the whole role-playing community evaporated from Dark's site some time ago. However, I will only give those URLs over PM or some other form of private communications.