If they did something like this they would have to do it before losing control of Congress and lose Senate seats, because then a Republican Congress could appoint Donald Trump as Speaker of The House then impeach both Biden and Kamala, and Trump becomes President.
Not really. The Assistant Democrats will put up a fuss, to no real end (Standard GOP Playbook).
I could see this happening.
However, a Republican Congress would NEVER appoint Trump. Ever. They hate the man - full stop.