As MAGA continues to purge the party of anyone not loyal to their orange god-king, the party shrinks to only cult members. MAGA is not driven by ideology or even principles, it's a cult of personality driven by rage, anger and hatred. In most cases MAGA isn't even concerned with governing, just maintaining and gaining power.
So what happens anytime a cult leader dies, will it splint or create it's own party. One thing is for sure, MAGA/Trump supporters will want someone also in the mode of dumb Donald. Someone who can play upon their perceived grievances and anger with a touch of charisma.
Everybody should know the old GOP is dead, it's not Reagan's party anymore. It's a party driven by the right-wing media industry, who preach a diet of lies, propaganda, fear and hatred.