I don't use a ds4 but if I did, I'd have both the settings for the t4 and the ds4 written down. It only takes a minute to completly change from one to the other if you've got them written down.
Don't know if it will work, but using the ps4 controler reconfiguration in settings allows one to reconfigure the ds4. Using the game controler setting allows one to reconfigure the hotas 4. Click the check box in the ps4 controler settings allows one to use the ds4 reconfigured buttons. Unchecking the box, allows one to use the hotas 4.
DO NOT utilize one while in the other's settings.
It's a console not a pc, thus it will never have all the reconfiguration abilities. Much is the same way, one ship can't do everythiing as well as one ship designed and modified to do one thing well. Yes, one can haul passenger in a fighter, and a passenger ship can be moddded to fight. But neither can do the other as well as the intended purpose of the ships design. A fighter is not a bus nor visa versa. A miner is not a fighter nor visa versa. A hotas is not a ds4 nor visa versa. A ps4 is not a pc nor visa versa.