I have a dream.
Another layer of Ableton, which enables recording single or multiple tracks to another layer of clips as easily, as you do in session view.
Call it a MetaLooper.
Visually, is very similar to Session View. Record the current playback of a track to any of this track's metaclips, or trigger audio of ones whose triggered clips are already occupied.
Triggering whole scenes
The tracks which are armed get recorded all at once, already busy slots simply get their audio triggered.
Resulting additional computation will require processors of tomorrow if you would like to add audioeffects to these meta tracks, too, but the investment seems well worth it.