Currently, RedM is very early in development. Unfortunately, they recently announced it will be a while before it gains much traction such as higher player slots. AFAIK they only have one programmer working on both projects, and I think they are mainly focusing on FiveM for now. The map is just too big for the current 32 slot limit.
For when it does gain more traction, I would like to do something a bit more unique than a roleplay mode, because the map gives far more opportunities for something unique IMO.