I think the best outcome would be that it might uncover deliberate malfeasance that might prompt some folks in congress to do what is needed. I wouldn't be optimistic though.

Slightly more likely is that such discovery would drive the public towards a congressional swing away from his enablers at the next congressional election next year, assuming we have it. I'm moderately more optimistic on that, apparently such a swing is already forming, but to what extent isn't clear.

We can't undo the election results, the congressional count done on jan 6 is definitive.