Cutscenes are skippable manually. No problem here.
Loading screens can be avoided depending of areas if you have a good better
Loading faster in arena also depends on computers. Yet the counter is the same for everyone. So whats the point.
Accessing all outfits via mods is not a game breaking thing as it only affects yourself.
Having a better ping can vary depending where the player is located, so you lose one point on that one as well.
Having GCD disabled allows players with lower than 100ms ingame to actually have no input lag.
And people higher than 150+ms with gcd can spam more than those with lower ping with GCD on, which is also already unfair.
Some xml edits are banable, shouldnt be even touched. Yet there's xml edits that gives you a better QoL/Better experience. So that's a double edged sword.
Editing simple mode to make skills easier to spam on a single button. Yet a mediocre player should still be able to perform just as well without the edits.