4 (maybe regional) Divisions of 5, thereby including Scotland and Ireland.
The top team in each goes into a randomly drawn semi-final, then final.
Less games, more practice.
One week is first class, the next limited overs.
Each day is 120 overs with the ball change at 100 to encourage better old-ball bowling. Less cricket should encourage fast bowling, but this probably needs to be mirrored at international level. No point having a kid build up pace for Essex then getting run into the ground player back-to-back tests