[EQAndyBuzz]

It also saves the states a lot of money which can be used in the general election.

[Svartalfiar]

It also saves the states a lot of money which can be used in the general election.

It would save zero dollars, actually. Every state would still have Republican primaries for the House, maybe Senate, judgeships, mayors, governors, city councils, Sheriffs, local dogcatcher, and so on. Not having Trump in he primary just means a lot fewer people will vote is the rest of the primaries, so Dem crossovers will be much more effective.