Well, one can argue that if High Voltage Studios wasn't in the charge of last-gen ports or the last-gen port was completely forgot, PC version could be actually better.
For that reason and simply because it waste resources, I would just ditch it completely. It doesn't do any kind of good for a game and in fact, sometimes it just cause some problems. Battlefield series for instance with Battlefield 4 was held back because of ancient hardware of last-gen ports (doesn't matter though because the series were already destroyed by the last-gen).
I know that some people still have last-gen and can't afford the new console but it shouldn't be just because of that, since it's the same deal that if you just can't afford new PC. The main reason is that WB games might think there's still potential amount of buyers on the last-gen but still, I would've ditched the idea.