my 2p - voted for keeping as is. Both classes on the same day.
John Price makes one key point which I think (again, an opinion) should be fundamental here - the Regional series is there for people wanting to compete in a series of meetings and attain an F rating.
Centralised and advance booking, with advance payment, and advance warning is a pre-requisite, and then you prioritise in order...
1) Those wanting to do all 6, and paying up front
2) All 5
3) The minimum 4
4) Then fill each meeting using members from the host club as a priority.
I won't go into the F1 thing, cos I think it detracts from the key points above!
2p spent.
Andy Grason