0 coast is a dope little synth, loved mine for the sound (the bass!) and my first intro to “west coast”. I can’t see anything wrong with having two.
But yeah I hate to feed gas and it’s true eurogas may be the worst of all gas, but getting a small-mid case as as expander, if you have the money and it doesn’t intrude on your philosophy, might be the best way to go. One of the thing that really steps mod proper up is the amount of attenuation you can do which is often more limited on semimods.
0 ctrl is amazing for modulating and is a secret weapon of sorts, just clocking it and stepping a parameter or two to give motion and slight variance is soooo nice.
Recently got a dfam in a trade after eyeballing one, not sure what I think yet. Sounds amazing of course. It can do SO MUCH more than 4-on-the-floor and is a really unique design, but is still an 8 step sequencer - but just the way the pitch and veolcity knobs interact can give you so much variation within those 8 steps. Now combine it with 0 coast 8 step sequencer modulating it - fun times