How would you reform the primary system?

[Frodo]

I would change it to a rotating regional primary system, and removing all the caucuses (with the possible exception of Iowa) by changing them to primaries instead.  Apart from that, I'm fine with what we've got.  The proportional system as far as pledged delegates goes is a very nice feature, and one I have no desire to fiddle with. 

And the super-delegates (as much as they are criticized) is a fail-safe that keeps our primaries from turning into a circus the way the GOP has.