Remember that it's going to depend on the soft-synth too: for example, Cakewalk's older Dimension Pro doesn't support patch changes (probably doesn't need to); neither does Big Tick's Cheeze Machine II (where it would make sense). So it's not a panacea.
Interesting as there were no mix changes! The only differences were I exported as a 24 bit wav from CbB, loaded into SoundForge, reversed it and stuck it on the end (I said it was black hole like!) and exported from there - same bit rate too, so presumably (and I haven't listened closely) the export algorithm in SF is "better" than CbB's (or it's psychosomatic?).
I'm not a huge reverb person (there are some reverbs on individual instruments and quite a few delays too). I have a super-extended mix to post later (it's a cunning one that fits in nicely with the idea of neutron stars colliding).
Black Hole Mix
It's because there's no way for CbB to "know" which audio/MIDI tracks should be solo'd as that routing is managed opaquely within Kontakt (or other plug-ins; this isn't Kontakt specific).
That's really great to hear - it was all done on headphones (monitors currently mothballed for space reasons) so I was a bit worried about how the frequency balance would work. And I was having to work with (not that I knew at the time) a failing PSU on my audio interface...maybe I should work more like that ?
I'm really liking this - even more than my own Tungsten+ theme which I posted here! My one "complaint" (which applies to virtually all the themes I've looked at) is that the PRV looks awful unless you change the background colours to pale - the Mercury ones are actually pretty perfect).
I also (and no fault of the theme) had to change a couple of the colours in Preference\Colours to work a little better - something like Marker colour doesn't come from the Theme but from the Preferences\Colours section.
http://www.alien8.co.uk/audio/AftermathOfCollidingNeutronStars.mp3
Although I normally do space-rock tunes, this is a bit of a different direction (ambient/synthy). Very much a Work In Progress at the moment, but I think it's still nice as it is. Listen on headphones!