Enemy highlights are orange, which is poorly chosen given the color of speedpaint, and many map color palettes. Very often my eyes will skip over a target because it's so rough to see it past similarly colored game elements.
Out of bounds areas are too restrictive, vertically. It de-incentivizes going at max speed, which is the most fun part of the game.
The greying-out visual effect as you enter an out of bounds zone genuinely should not exist and is a weird annoyance.
Speed paint is too necessary to maintain a route of movement ingame, which is going to lead to that loadout slot not being used for anything outside of speed paint, bar a few rare strategies.
Consider making player wallrun "magnetism" more reliable for the sake of QOL