Thank you for the suggestion. Unfortunately, freezing is an even bigger problem for me in Live.
When you're working with Kontakt, especially on these giant projects, you want to have a few Kontakt instances each holding a lot of instruments, and a bunch of MIDI-only tracks routed to control them. In that case, Live's Freeze/Flatten commands don't work, and you have to manually route audio to temp tracks and record them in realtime. In Studio One, you can randomly select MIDI clips from thte main timeline, and it does all of the routing and muting for you to bounce them to audio correctly, without making you sit there for 3-4 minutes at a time per instrument or section. So freezing is an even thornier feature request in Live.
Regarding dynamics, yes, there will always be some issues regarding attacks and sustained dynamics with Chase Long Notes behavior. But for most cases, and in every case that I would use it, that is either acceptable or really not an issue at all. Using any orchestral library like Symphobia or a strings library like Sable, the dynamics are all CC-controlled, so they play back correctly with this behavior. I have no problems in Cubase, for example.