yeah, i don't think you can do LN without visible outpoint sats. so CTs are just for cold storage and private payments. a recipient has to reveal the outputs from what they received in order to exchange or other similar thing, but the change can still be hidden. but if it were true that the onchain has to be visible then how does taproot aggregated signatures work if they hide its identity as a channel open yet be able to route? i haven't even thought about that.