Brought out my S2400 and updated to the latest OS (April '23). I forgot just how premium this thing feels. The pads are so silky to the touch, the knobs are super tight with no wiggle, they turn smooth, the faders slide up and down rock solid middle. Button presses are firm and tactile.
I’m toying with using it front and center as my main audio interface, too, since it has USB audio. The buttons, knobs, and faders of a MIDI track can be configured to send out notes/CC/etc. I don’t really need all the inputs my 18i20 has. I guess I could try this configuration for a week or two and see how I like it. It goes to sleep on its own so it isn’t like it would be on 24/7 
I’d probably need want to buy a mic preamp (which is fine), I already have a nice DI for my guitars in the Canvas. The only bummer is that you lost the analog filters on outputs 1-6, but I guess if I’m not hard up on that “classic SP-1200” sound it’s not a huge deal tbh. I’m good with 12-bit 26kHz if I want that. No idea why Isla didn’t have the ADC after those filters but whatever.
Of course it does not do 24-bit audio at all so that’d be… interesting.
Or. Or just eat up all six of the rear inputs on my 18i20 with its outputs 
I’m on an ADHD/bipolar trip atm. And I change my setup a lot because of this…