An noted previously, Congress is interested in both Justice and setting the legal foundation for preventing a lot of shit that Trump did from happening again.
In most instances, nothing will happen to Trump per se, in others he could face major problems. Like with Hillary's crimes, out of sight, out of mind. She's gone. Effectively kicked out of the DNC leadership structure so interest was lost in pursuing justice against her in court. Same for Trump in some areas, but in others, the gray areas, Congress wants a ruling. To get a ruling literally calls for making a Federal case out of it.
Correct.
As for much of this going away, I do not seeing that happening, one is simply that the right keeps insisting on keeping the election and trump in the limelight, and as such I foresee a Special Prosecutor being assigned to investigate who did what during this election. The Dems will come off clean because their part has been investigated over and over and nothing major was found. Trump and the Republicans will not come off well, for one trump himself attempted on several occasions to cheat, heck one was caught on a recorded phone call, not to mention the culpability of several Congress Critters, is going to interesting to watch unfold, the Republicans and trump should have been more careful in what they wished for, they are about to get it, and they will not like the results.