Nice radio choice, I have the Alpine version. The thing I like about the pioneer is the menu speed. My Alpine is slow as a snail. Most of the time its worth using the remote so I don't have to deal with the menu speed. Anyway, I'm sure they could impliment this if they wanted to but I don't see it happening soon. You could build your own mixer outside of the empeg to switch between aux and mix modes if you are an electrical techie like me.
If you are interested I will be building a TV output for my empeg sometime. I plan to use it in the house and on my alpine in the car. I am, however, waiting for empeg or someone to impliment song data out the serial line. I am slowly learning more and more about linux so maybe I will impliment this step myself. What a software guy can do in a day would take me a month though.

Alex Lear