The P12 has the play list option,meaning you can save a set of patches for instant recall which is geared for live use rather than trying to scroll to find your specific patches,just simply assign those patches as above so you can switch between the patches that have the specific osc selected by using the soft buttons below the screen,the Pro 2 has this and I find it really useful.
Just a little bit of prethought and housekeeping can overcome some of what you may find omitted on the surface..
Thanks, Yes I know all that but with a synth like the Prophet 12, you shouldn't really have to find a workaround for such a basic task as switching an oscillator on or off IMO - especially when each oscillator already has a selection button.
It's just a button press on the Studiologic Sledge and it's a shame it isn't the same on the P12, as it makes building patches and deconstructing existing ones much easier.
Applying one oscillator to a patch and then swapping patches as you suggest isn't a satisfactory alternative for obvious reasons. You can't for example sync oscillators when they are in separate patches.
However Dave Smith seem to be pretty good at listening to their users and have done 4 firmware updates so far for the P12, all of which have addressed bugs and improved functionality, so there's still a hope that this shortcoming could be addressed in a future update. :)