On topic,
Cubase having an editable freeze would not be like S1’s because the architectures are different. Cubase uses a “virtual” kind of system for freeze, a system that ties into it playing audio files in the background. S1’s Transform is technically just bouncing the instrument to an audio file on the timeline, removing the instrument track, and replacing it with an audio track containing a combo clip that carries both midi and audio. It’s a completely different approach. That’s why it’s called “Transform” and not “Freeze” because it literally “transforms” the track class… with instrument tracks anyway.
So Cubase doing editable freeze would have to work within it’s current freeze architecture, not do what S1 does, unless they just plan to just abandon that freeze architecture, which i doubt. They’d kinda have to do it the Cubase way, not the S1 way.