I hope you guys have thought of this:
The new freeze functionality now lets you collaborate with someone else on a track even if they don't own a plugin used, but how about the operator?
Everytime you open a track with the operator present, and you do not own it - you are not allowed to save anything.
If the track containing the operator is frozen - can you work on it if you don't own it?
That's something you can't test on the beta as the operator is not registered?