I used to have some bigger racks that included multiple synths for a certain purpose (e.g. epiano rack, solo synth rack, pads rack) and switched them on and off per state. So I could have one epiano rack state that played LoungeLizard, another one that used Pianoteq. Made it really easy to set up a song from very few racks and select ready-made sound - but the editing became more and more complex and unwieldy; lots of song-specific presets necessary for each of these multi-racks, so over time it began to defeat the purpose.
These days, I’m in the process of cleaning out my racks, reducing them to one or two (max) Instruments each (with some specific effects plugin if they are specific to the respective instrument, e.g. a guitar amp with some stomp boxes before it). Also, all my racks have a volume control (FreeG) inside them bound to CC7; most also have an EQ before the volume.
At the same time, I’m re-working all my songs to use “keyboard abstraction” racks that encapsulate my MIDI keyboards and provide separate outputs for notes, pitch bend, modulation, aftertouch, so connecting keyboards to instruments gets easier to manage.
Yes, my songs now have a couple more racks in them, but as @Neil_Durant wrote, this approach is far more flexible and resource-efficient.
Once I’ve reworked my setlist to the new approach, I’ll create a couple of video walk-throughs of my setup and some songs to illustrate how some of Cantabile’s features can be used in “real-life” setups. Stay tuned