It bothered me a little bit to see so many prominent Republicans like Marco Rubio, Ted Cruz and Rand Paul go down, but I guess it makes sense considering the magnitude of the waves that happened in those 3 cycles. After all we did see people like Frank Church, George McGovern and Warren Magnuson go down in 1980. An entire generation of GOP leaders getting wiped out does open up the party for new leaders to arise and reform the party in 2036 and beyond.
I do wonder how the house map shook down. I'd imagine that 2022 saw a bunch of marginal and D-trending seats flip - that would probably be the year that a lot of the ancestrally Republican but anti-Trump seats finally flip, like the remaining Orange County seats, and upscale suburban districts like IL-06, KS-03, NJ-07, NJ-11 and MN-03. Of course if Trump really falls off the wagon soon we may see those seats flip in 2018. To break 300 seats is a very difficult task with current polarization, but working class whites going over in droves for Cordray makes it a lot easier. I think in this scenario we see places that flipped in 2010 like MS-01 and SC-05 going back, as well as upscale districts that weren't quite budged by Trump like the suburban Texas districts (TX-03 for example) going D.
Moving forward I think places like TX-03 are the first ones to flip back in 2030 and on if we really are looking at a more technocratic, upscale GOP while former "Blue Dog" seats stay Democratic. In this scenario we may end up with a lot less polarized House, one looking more like
1996 than 2016.
Also @TD: really appreciated the response regarding the fate of the electoral college. I could see it sticking around because it benefitted the Dems but if the 2020s is anything like the 1960s in terms of amending the constitution it's easy to imagine it going. If Pence were to lose the popular vote in 2020 it'd probably be toast.