They might as well target 540p (DRS) on PS4 and XB1. As an ex-Xbox Commander (no longer playing the game), I'm aware of how consoles benefit from fixed-hardware development, but those rusty Jaguar CPU cores in PS4/XB1 can only do so much, especially with the nuPlanet Tech.That's current gen consoles. Next gen is PS6.
Frontier have already said they have no plans for a current gen port of the game. They're targeting last gen only.