i feel like we would see considerably more ap kai'sa if you could get the q bonus with ap
now i dont know how everyone else builds
but i like to build her max cdr full ap and im aware by itself her W can hit quite hard and q is more of a follow up or an after thought.
however with having her q get its missile bonus from 100 bonus AD you simply will not be able to get it on a full ap build (ex:
)
if you were to allow for her to get the bonus missiles off of say 200ap (some some cheesy on hit build cant get it easy aswell)
i feel like it would improve her ap sides quality of life considerably