Look up the speed runs there’s new tech that let you handspring off up walls instead of climbing and do the lb+x flip to speed boost flip over mid walls further than the charged jump
This game just proves to the megagiant companies that making fun movement a manual process doesn't mean it has to be complicated and ultra difficult. You could make a simpler version of this games movement (less trick focused) and it would fit perfectly into AC.
as you jump into a wall or while hanging off a ledge, you press "eject" which is X on an xbox controller it should say in the vaulting/climbing/zipline section in the controls menu