Usefulness of ableton when is about fast switchin of route sources is in no doubt really big but when it come in need to be able to chose easily between the multiple configurations of tracks it get problematic ... Yet I still not used live 8 but live 7 and from the beginin it miss a feature of possibility to record certain tracks routs on global level and on just few selected tracks or to say so grouped level although possibility of switching fast between such configurations with with button in top raw ...
So that would really save time when you recording multiple audio and midi sources in live so it will be step more to the sequencers like Cubase Logic ... giving a improvement also if you just usually in session work with few routes and dont want want to open thirty tracks or open another set ...
It could be used for savin on global set level and on few chosen tracks level ...