Lemajik
2
i have been asking myself somewhat similar question. And got nowhere. I still sample lock all the triggs and copy and paste them. Got used to that quite quick. But still i understand your burden with doing it all manually. I don’t think it is possible to change them all at once. It seams reasonable when playing live… Not to get errors. For example i use many sounds on one channel only. And that would just get lost if i tried to change them all. But when working i do miss that to
Applying the scene parameters to samples like p-lock live recording the crossfader is impossible. As far as i know… 
You can achieve much similar stuff with parts. Which come in handy in this situation. But that is more programing again… And more programing gets you more joy when playing live. 