Perhaps the answer to the problems the GOP is facing could be running up margins with the whites, particularly blue collar whites who didn't show up to vote this time and who used to vote Democrat. There is no real reason why white working class would continue to vote for the Democrats in the next election.
Perhaps the GOP could forego NM, CO, FL and VA for a more populist message in PA, MI, WI and MN?
That would have to be a strong anti illegal immigration message.
A. Eventually Texas becomes a swing state so the GOP needs to change their immigration policies sooner or later.
B. Even if they could pull off your plan they would be gaing in states that loses EV and losing states with growing EV numbers.