The Show Page already is pretty good, the only thing I miss about it though is the possibility to record and play back audio/midi loops right on the spot.
Instead of having to use pre-recorded backing tracks, I would love to just set the sound design and the mixing adjustments for each track before the performance, so that I could record and play my loops live on stage and build up the song that way= Live Looping! :D
The ATOM Pad Controllers could control loop features like record, overdub, playback, one shot, etc. and maybe even manipulate the FX settings on the Vocal track in real time for example...
If this would be made possible, the whole "Live" Feeling of the Show Page would improve dramatically and open many creative doors for musicians all around the world. Also S1 would probably be the biggest competition for Ableton Live then!