I will definitely look into Expert Sleepers at one time. I think you mentioned getting extra LFOs and other controls like this, so this will be handy.
As for switching between DCOs: although they ultimately sound the same, they can each be configured differently, so switching between two differently set DCOs as FM input can be useful too.
As for switching between DCOs: although they ultimately sound the same, they can each be configured differently, so switching between two differently set DCOs as FM input can be useful too.