I don’t know if this had already been suggested but looked for nothing.
I suggest that Jack have the quick access for camouflage and pilot, as the gerar have quick access to reload [(X) hold down for a few seconds] and to put on guard (Y) press button.
They are one of the initial skills that he has and the ones that are used the most, and it is a bit annoying to have to select the character and then look for his ability, when you have few it does not matter much but as you progress it becomes difficult to find it.