How is it for sound isolation? One thing I like about the OP is attention to isolating the motor from the wall and blinds by soft bits so you don't get amplified motor buzz.
Im not the person you’re asking but this looks like it sits inline to the actual shaft that turns the blinds. Not the pole that hangs down you turn by hand.
I looked at doing this exact thing and on my blinds there’s plenty of room in the top construction of the blinds to put a servo in there you would never see unless you’re looking for it. The rod itself was even not perfectly round so you could 3d print a shape to go around it very easily. I’m honestly shocked there’s not an aftermarket company already doing this exact thing.
3d printed gear box with a servo that sits inline with the shaft. Invisible outside of the blinds if you route the cables correctly.
I controll mine with esphome and home assistant rock solid for years