If I understand you correctly, you want the states to change the makeup of the RNC.
Can’t they do that now since they control who is on it and those then control who holds the RNC offices?
There are weak states where a small clique is in league with several other small cliques in other weak states and they work together to stifle popular movements within the party.
Working within the party you can never overcome the inertia of the weaker parts of the party. That's been going on since the early 1900s in fact. Eventually we have to break the grip.
Now that we've resolved the Southern Republican issue ~ THEY LIVE! ~ it's time to pull the party structure back into the control of the constituent coalition member groups ~ and out of the hands of the professionals.
That can be done best by walking away from the source of the problem!