Would you like the French system where the local authorities own the rolling stock? To me that sounds kind of attractive as they would be motivated to provide quantity and to maintain them to a decent standard.
Maybe some sort of system the encourages good interiors? Regional railways are often a fair way behind modern busses in interior quality. Until recently In mansfield we had unrefurbished 156's competing against brand new busses with leather seats and such. Imagine that on a regional DMU