Could you provide more details regarding the "open RPG platform" you're looking for?
I'd shamelessly use this chance to advertise NWB| if I knew it would resonate with you.
I like to say that the faction is basically supposed to be a ground for developing a character by having a broad selection of personalities and Origins to choose from.
Basically, you can be many things within the Bundschuh and go many ways from there on, not being confined to Rheinland per se. Creating stories is definitely something you could do there, events too, provided there are ideas (which I welcome, of course) and enough people to participate.