I'm thinking, and I know this has been mentioned before, that a meeting of the 'heads of state' (Wits, Oxon, Berks and even Bucks? RO's) could be in order to arrange a series of combined meets..? One monthly meet at one of 3/4 venues each month perhaps - rotating on a monthly basis.
Saves sitting alone in a car park surely? Would theoretically make for bigger monthly meets that could be interspersed with mini-meets, run outs and the like.