I just ran into an issue with this myself since I got a PS5 and the PS5 version of the game recently.

I DID upload all of my characters settings in advance from the PS4, then I downloaded those settings on the PS5 version of the game... but since the resolutions are different my HuD was borked anyways and still required adjustments... for each individual character. Incredibly time intensive process, so I would also appreciate if there was an in-game feature that was just like... "oh you like your character settings from this character and want to use them on an alt?" copy -> paste, done!

Even though i've already done the adjustments, it could still be useful to me in the future if I decide I want to change something on my layout... I would no longer have to manually adjust it myself on all characters.