I was going to say, the only mod tools at the moment are whitelists/blacklists.
I think if people post in here "Hey, am playing, anyone joining" that would be something along with a schedule perhaps of planned events?
I have created a Steam Group which is currently public:
http://steamcommunity.com/groups/ocukpcars#events
The calendar is also publicly accessible so anyone can post an event, the advantage of this is everyone can see what is going on AND everyone gets a shiny Steam pop up near the start of the event
The game is going to be what we make of it. Surely between us we can cobble something together and have some fun.