I’ve thought about this–at least for a couple of minutes. For very obvious reasons, Donald Trump is molasses to the legislative process. Seems to me that this should make Democrats content. Every little infusion of chaos freezes the legislative body, or slows them down to a great degree. While he might have seemed like a pleasant distraction so that the public wouldn’t focus on the Machiavellian legal overhauls such as the Republicans’ version of healthcare (just look at what they’re attempting to do to people with disabilities), he has proven to simply highlight congressional turpitude (I hope I sounded like a Washington Post journalist just now. I’ve always wanted to be one.)
More to the point, if Donald Trump is impeached and replaced by Mike “place a fence around mike” Pence, the legislative process would probably go much more smoothly for Republicans, at least until the 2018 midterm elections. Perception of political pundits has largely been about “the lesser of two evils.” In this case, I’m not sure Pence can rise to the challenge (of being legislative molasses).