I think it would be great if it was capable of freezing instruments with multi outs like DFH or SID XL. I realize that it would take a while to freeze so many outs (16 in SID XL if you use them all) but those kind of multi sounds/samples are huge and take up a lot of RAM and often forces a buffer change. This is very inconvenient when it happens early in the recording process (and drums usually are) because it's not that great to record with a 256 buffer. During mix I would just unfreeze and use whatever buffer that works. I know that I could just bounce the output but I usually mess a bit with the individual levels which isn't really possible with that alternative.