THIS is the way to get after the SCOTUS decision. (Wonder how that would apply if a Federal agency tried to take peoperty using eminent domain?)
I don't know. Interesting question.
My state already has limits on eminent domain takings. It's being suggested that developers will be targeting the legislatures to relax restrictions, in order to take advantage of the SCOTUS ruling. However, ultimately it's in the hands of the voters. If your state reps or city council are on the payroll of developers, vote the b*stards out!
It will have not effect on federal projects. State law cannot countervene federal.