Health care will be a bigger issue for FIRE folks, I'm guessing. With no ACA, your choices are to drastically cut the budget/withdrawals and get on Medicaid, or pay a LOT of money out of pocket for insurance.
A lot of people will be headed back to work, I'm guessing, because that's going to be a $10k/year+ hit. Save up your extra $400k (or maybe quite a bit more), kiddos.
-W