I have heard people mention the possibility of combining splices and conjoins. With taproot you could increase your channel privacy onchain if some of the inputs and outputs to the splice were not controlled by your wallet or LSP.

If those coinjoin inputs paid some of the common tx fees for the splice it would even be economically beneficial for the channel parties to facilitate it.

Do you think there could be some useful mashup between LSPs and joinmarkets via splices?