This gen is going to be interesting because INSOMNIAC rised the bar a lot, thus the internal competition between the Sony studios is going to bring us great looking games.
Just imagine the "arms race" between ND, Guerrilla and Insomniac
I don't know, just because a single developer out of hundreds (thousands?) provides a ton of performance options doesn't necessarily mean anyone else will follow. For example, CoD became the undisputed FPS king back in the PS360 era largely thanks to its focus on 60FPS, and how many devs have fallowed it? Almost none, everyone went for pretty graphics at 30FPS, if even that... So I'd say that nothing will really change this time as well, everyone will just stick to their own successful formulas, those who prioritized performance will continue to do so, those who used to raise the technical bar will continue to raise it even higher.
So speaking strictly about Sony's devs, 30FPS will remain the priority in order to achieve the absolute best possible visuals, probably we won't see 4K either later on in favor of 1440p+CBR, to squeeze even better effects. And if we're on Insomniac, they are actually the ones who officially resigned from making 60FPS games back in the days, so that they could compete with other devs on the visual field, so who knows, maybe history will repeat itself and few years from now once other studios start making next-gen only titles.
