The new Republican Party is a much, much better party than the mess Trump inherited. But its also marginally weaker, having lost an institutional beachhead to the socialists. It will be a chaotic two years of complete government gridlock and bitter fighting. That will reduce the MAGA gains in this next two years to some more narrow things. No Wall. No more tax cuts. No healthcare fixes, no immigration law fixes. Complete standstill and open conflict on those things.
The House is going to unload every trick and weapon at Trump...and remember, the bureaucracy in D.C. will fall in hard lockstep with the House...Trump will not even have the loyalty of the Executive Branch. This is going to be true Hell as far as governing goes.