I wouldn't suggest appeasement, but the Republicans warning that impeachment will just cause further division are actually correct. It's just going to give the nutjobs more reason to feel aggrieved and do things like we saw last week.Again I'm not sure appeasing them is the right approach. They've already stormed the US Capitol and whilst most of them were perhaps just out for a 'good time' it seems quite clear that some of them were very prepared to take hostages and I think we know how that would have ended. Quite apart from the explosive devices recovered at both the RNC and DNC offices (drawing away precious Capitol police resources at the moment they were needed at the Capitol).
A more measured response, rounding up the idiots who stormed Capitol and punishing them, and then dealing with Trump later would stand more chance of putting the fire out. It would also make clear that Trump is an irrelevance. I bet he's just loving all of this free campaigning that he's getting.