It won't get better for Dems if Hillary wins in 2016...
That's unclear. Working white women turn out much more reliably in midterms. And even so, a Kennedy/Scalia retirement with a Dem president and senate could be worth 40 state legislatures and 230 R+5 house seats IMO.
Good point. The worst scenario for Dems long-term is a narrow, narrow Clinton victory with the GOP keeping a strong hold on the House/Senate, followed by a 2019-2020 recession. While improbable, this outcome is somewhat plausible and would make life very, very hard for the Democrats.
Yes, and the SCOTUS consequences of a Hillary win are limited because Democrats need a miracle to keep the Senate past 2018. Democrats have gotten too excited about trends that are likely to help them in 2040, not now. If/when the demographic tide does roll in, note that they probably just trade the House problem for a Senate problem. AZ/FL/GA/NC/TX are all large states.