The destruction of the GOP is pretty much the replacement of moderate/central GOP members with their extreme hard right counterparts, as a party, they will not end. That is something we absolutely don't want.

The program daca can be made permanent but daca cannot give permanent "Greencard" or the like. It can give a 2y or however long work permit and not grant legal status. Its basically the same status quo we have now, but the program itself would be protected from people looking to end it via executive order.