First, a disclaimer: I would love to see a MAGA-based third party. The best you can say about most GOP folks in DC is that they are nothing more than Democrat-lite.
Elections are expensive. Will a MAGA third party be able to raise enough money - consistently - to be competitive?
And we must not forget the Ross Perot effect!!
A MAGA third party would split the Republican vote, and probably split it enough to give the Dem’s many Congressional victories, at least initially.
So it’s a heck of a gamble, and one I wouldn’t take (your mileage may vary). I say push for reform within the party.
What would be done differently than has been done to this point? What's your plan?