It's an interesting question to pose... And I look forward to seeing how game design evolves here on out, we have seen an inkling of what that future is with StarCitizen of course.
Yup. I feel like what specific advantages to game design were utilized will be tough to make out without the devs telling us. It may result in us seeing higher quality assets, or maybe this forest pathway was designed in a more pleasing way than it otherwise would have. But either way these things should end up saving devs valuable time not having to deal with so many workarounds and compromises.
Gonna be interesting to see how each console handles things with their respective pros and cons.
Cell was talked about a lot, but unfortunately mainly due to it's potential that it rarely reached. Hopefully that's not the case with these things.