They’ll start investigating Trump. The only reason to care who holds power is to avoid more Harassing investigations into Trump. Beyond that it really doesn’t matter.
Even worse, have the House declare Trump an insurrectionist so that according to the USSC ruling, he could be excluded from state ballots. I assume a declaration of that nature would only take a simple majority once introduced. With the narrow Republican majority, all it would take is a couple of RINOs to be bribed or extorted into voting with the Democrats or sitting out the vote and the majority vote is achieved.
He's been wrong on some issues but Mike Johnson is not going to do that. Jeffries would do that in a heartbeat. A rash move could bring about a disaster. If a person is convinced that Johnson has to go, wait until after the election when hopefully there will be a little more margin and Trump is in the White House. The only things keeping this country from Democrat domination and ultimate destruction of our country is a razor-thin majority in the House, the USSC, and the possibility of the return of Donald Trump. Don't risk losing two of them in the near future on a rash move.