For now the freeze function only freezes the plugins before a hardware insert. Especially when using hardware what you often want is to capture the hardware processing to get independent from the hardware unit and can use it on other tracks as well.
For now the only method aware to me to do this is to do a “reamping”, sending out the output of the track and record in on another.
Expanding the freeze function to realtime mode and using inserts makes track handling easier. you wouldn’t have to add a track and could organize everything within the source track and clicking “freeze” would be way more easy than to manage the “reamp to new track” workaround.
Oh, and a freeze function for Busses, so that you don’t have to “stem-export -> import” everything would be fancy as well.