Have a pre-primary primary, that a good idea. But how many of the candidates (and supporters) would honor the results?
I say the RNC has a committee that decides which three candidates will run before the primaries begin. No more than three. Having 6 or 7 running is counter-productive.....Also, stop the debates...it’s stupid to have debates between members of the same party, it just provides sound bites that could be used against the eventual nominee down the road.