I am not buying Okami for a fourth time unless any one of the following things happen:
A) Good Additions to the base game
B) I can run it at 4k60 on my 1060 6GB
C) It releases on Switch
If there's nothing new in the main game, then the PS4 version is useless to me really. I already have/had it on PS2, Wii and PS3, all offered something unique over the other versions. PS4 version will just be the PS3 version so of no value to me, unless new things are implemented. PC at 4k60 is enough of a difference over the other versions for me, and the Switch version being handheld is enough of a difference to help me justify the purchase.
Now, an Okami HD/Okamiden HD double pack on PS4, I'd buy that in an instant!