I've been working on a post outlining various possibilities for the next 4 years, but it's not ready yet. But I'll mention this Politico piece, discussing the betting odds on a Trump impeachment. Apparently the betting world thinks it's a lot more likely for Trump to be impeached or resign than I do. I think most of that is wishful thinking, fed by our past history of Nixon and Clinton. Back in the day impeachment was not mentioned--it took a long while for the Congress to reach that point with Nixon--that's probably why I make long odds on that result.
[Updated to add: "“Trump is the gift that keeps on giving,” Paddy Power’s Davey
said. “We’ve got a bonanza of betting specials on The Donald. When Trump
took to Twitter this week to defend [daughter] Ivanka after Nordstrom
dropped her clothing line, we were out with a [betting] market on next
retailer to drop the Ivanka brand next.” (The current favorites are TJ
Maxx at 4-to-1, Walmart at 5-to-1 and Amazon at 6-to-1.)"]