I think it would be amazing to have a Platformer Pathfinding Plugin. It could give the AI a few abilities such as Climb (climbable objects like ladders or walls, if it can climb them), Jump (for getting around in most cases), and anything extra could be marked as a Special A-B Point where it acts like a path, but when the AI gets to A, it performs the special way of getting to B (e.g. swing across a ledge via a vince), then continues on it's regular pathfinding.
Whatever can be done with this kind of plugin would be super helpful. The more options the better.