given the use case - I'm not convinced of the need for the extra vcos
-- JimHowell1970
I think of the Orbit 3 as more of an LFO. It will probably be useful as an extra VCO, but I honestly haven't thought of it that way very much.
The Virt Iter Legio was definitely intended as my third oscillator, and the options for phase modulation and built-in chorus factored into that.
Since the Malevolent's oscillators have four outs a peace, the noise engineering module sets up some great options for layered drones.
I have been thinking of using my Digitakt for reverb, because one of the recent firmwares allows for using that box as an effects processor for other gear. We'll see how that goes, but you are probably right in your suggestion for finding a good reverb module.