Disagree.
It only needs FPS Boost and Mouse/Keyboard support.
the whole cover system would need a full overhaul, it would need FOV options, better controller aiming (mouse support would be great too but that's not really a fix for people playing on controller)
and it would need some graphical adjustments. the art style is all over the place. hyper realistic enviroments with cartoony looking characters and some weird lighting at times.
I think a full on remaster with lots of adjustments would be needed.
-make the graphics more cohesive
-add FOV settings
-completely remake the cover system
-completely remake the controller controls
-adjust some levels to be more in line with og Perfect Dark
-COMPLETELY replace the boss fights with new ones!
-basic character movement and gameplay adjustments
imo the game would need all the above to actually shine... fps boost would be great of course. that would improve perceived controller issues as aiming in 60fps will just automatically feel better than aiming in 30fps even if the controls are the same