Exciting update and possibilities, stoked for everyone who this will work for, two major hurdles for me in this new workflow.
Standalone MPC live since 2018, something like 50 sequences in the MPC. The basis of my playing live, an 8bar sequence is effectively 'the song' and track mutes are how I play live with on the fly arrangement changes. I think this general approach is common for many of us.
1) All sequences now global track type - not all my sequences use the same track type and amount, some might be 16 tracks, some might be 20-28 whatever. I do mostly keep things the same track number/position, ie kick is always 13, clap 14, hats 15/16 etc. so this is an adaption I can probably make...as long as i remember to NOT DELETE a track that I'm not using in sequence 1...cos maybe I'm using it in seq 2!
What if my next sequence is just totally different sounds wise, I end up with a bunch of tracks way off on other banks? I'm ok with losing programs but I really want a sequence to be its own thing. For me, this global approach is really constraining this way.
2) Track mutes - oof, the total basis of my live performance. Some sequences come in with drums, some don't...etc, making this global mutes is a show stopper. I also update/change these regularly depending what/where I'm playing. Maybe sequence 50 (the 'new song') is ready for the show, but i'm gonna play it first in the set so the intro will be different re track mutes. Well in MPC3...now it changes all the track mutes...
I really want a sequence to be its own thing

I'm good with 2.15, I do have gas for updated hardware, an mpc live 3 in the same form as my OG (no speaker!) with a new processor and of course more ram. Or, hey @Akai - make a processor/ram upgrade possible for the hardware that needs it, from a sustainability approach, thats a winner.
Have a great day everyone.