There's TONS of roleplayers here! Just check out the new posts, so many in the RP section. Everypony actually has its own system, but it's currently in beta. You can use whatever you want, but it doesn't look like many of the forum roleplayers enjoy using systems. From what I've seen, at least.
one thing i had in mind was just post arrangement. like he goes after her sort of deal and so on. Do you guys like that or not?
With so many users having different posting schedules, it might be difficult to set up a turn-based system.
Yeah I saw someone make a suggestion maybe a couple posts a day or limit it to a certain amount so others can comment. Sorry for late reply.