Spdif in as optional audio in ( auxiliary input )

Could it be possible to make SPDIF IN work like the new Auxiliary input so that
you could bring in sound from another source such as a key board, mp3 player etc to mix
into the kemper outgoing sound signal. There could be a soft button to select where the signal coming in would go in the kemper chain , ie pre effects, post effects etc. This way we could make more use of the digital in & out for different set ups. I have noticed that the sound I get running SPDIF direct to my reference monitors or my recording system is far better than running the main left and right outs to my reference monitors or my recording system. The digital signal is far clearer and more precise.
The new Auxilary input is good and a good addition however it cuts out the external effects loop which to me is very important and it would be more valuable to have the SPDIF IN as the auxiliary input.