I really think it will be a good addition to this game.
I'm used playing project diva X and future tone on my ps4 which have option of using triangle for example with two different buttons as well as the macro feature in future tone which allows me do a quad press (cross, square, triangle and circle) in a single button.

Please consider adding this feature for people who uses the ps4 controller in PPD

I think no body works on this game any longer for updating it or any thing, and this game has soo much potential it can become a real copy 1:1 with the arcade version or the PS4 version, but it got abandoned in someone's PC..... a pity =(