This is a simpler version of what we will be doing with my band. We will use in ear monitoring to ensure that we get a good stage mix and keep the click track out of the main mix that plays through the pa. We plan on running two guitars, bass, drums and vocals through the computer and route everything to separate stereo mixes that we feed to the sound guy. The only things that will not be sent through the computer is the cymbals. We will use a lot of automation and synths as well.
The main thing that I'm pretty exited about is the fact that this will allow us to use quite a few backing tracks as well. We're two guitar players (I'm at the left side and he's at the right) and when I play a solo, my track gets panned center and boosted a few db's in volume. At the same time, a pre-recorded track kicks in on the left side and doubles what the other guitarplayer is playing, ensuring that the intensity of the rhythm sections never drops out. We plan on doing alot more crazy things this way, especially with vocal harmonies, effets and what-not. I really feel that this is the future for my band.
-Sigurd-