Aside from the obvious community separation issues this would cause, the sheer technical implications of such a thing would be staggering, if not outright impossible without completely reworking the game itself (again). Just the logistics behind delegating servers between PC and console on its own would be a nightmare to implement. Do you keep all the existing servers on one platform while creating brand new ones for the other? Or do you then have to decide which servers go where? Either way, many players would end up displaced and forced into a server transfer. That's a fair amount of inconvenience, to be sure, especially if you've established yourself in an fc or linkshell local to your original server, and then get ripped away from some, if not all of the people you've played the game with because you're forced into another one with no means of interacting with your old sever aside from either external options or setting up an alt and having a game license on both PS4 and PC, which isn't practical for many people. In short, even if it were possible it would be wildly detrimental in many regards.