I don't really see the point. Sure, you'd be able to turn your bludgeoning damage into slashing, but it doesn't have much of an impact outside of a handful of edge cases.
If a weapon is already magical in 5e, it's nearly always +1 or more powerful.
Shillelagh is powerful enough to be picked up by tomelocks since 5e was released, and already works just as well on magical clubs & quarterstaffs. I'm not trying to make this class "Hexblade II: Alchemic Boogaloo".