I really like the idea of national initiatives. Maybe have a higher threshold like 55 or 60 or even better, 58%.
And the idea of caucuses within the party is interesting as well. So the JCP could have a more economic left wing and a more moderate wing on economics (we are mostly socially liberal afaik). In the RPP, there could be a more socially liberal wing vs a socially conservative wing. The socially liberal wing might be a defacto libertarian wing, though without the purity test.
Just a few thoughts. Some good ideas here. Redistricting might be interesting too....