I think hot stamps in general are a huge disadvantage. Some of the stamps won’t come out of the factory perfect. The process of stamping can warp the clay. And the stamps wear off! You can’t wear off an inlay. And oh by the way, cleaning them without damaging them is a huge pain.
I’ve always said that you can’t be nervous to play with your chips. If you’re worried about your players wearing your chips by shuffling them - where’s the joy? But I would absolutely worry about chips wearing from play, if I’d paid for mint hot stamps.
I don’t hate hot stamps; I actually like them. I own a hot stamp set. But they’re casino used and fairly worn, so the damage is done - I don’t have to worry about them.
I think you’re right to ask the questions you’re asking about imperfect stamps from CPC. But since it’s such a concern of yours, maybe you should rethink a custom hot stamp set.