I'm curious if there would be any sort of performance advantage if an audio router component existed. This would basically be like a mixer, but fixed input=output gain. I could see a use for a four in/four output crosspoint style. I am not versed enough in how the audio components are created, so this might not even be possible.

For those curious, my immediate use would be to take 4 inputs and be able to switch them around under software control - say someone plugs in two of the inputs backwards, we can fix that in software. I could also see a use when playing with various other effects and synths of being able to switch them in and out of the chain.