I’m completely not in this space but your comment had me wondering: are there digital cube faces? That is, a real physical cube but with faces that can instantly be set to a given color?
They exist, but one of the problems is they're not particularly good cubes. While it might help you learn the basics, not being able to handle it like a speedcube means they're probably not going to help you get faster.
That being said, while looking up those links, I found out that, since I got out of the hobby, smart cubes have become a thing, and are made by real speedcube manufacturers.
This is an easier problem to solve. I'm not sure if you have to solve it first or if it can identify pieces on power up, but after that it's just tracking rotations, which can be done from the (fixed position) centres alone. But if an actual speedcube manufacturer can already fit those electronics in without comprising performance, I can't imagine it's that much harder to fit some addressable LEDs on some slip-ring-esque connections. Must just not be much of a market.
