Regarding the harmonic oscillator question, the Verbos HO could be replaced by a Stages + a RxMx. This setup has an upside and a downside in my view since Stages has multiple waveforms even for the partials and the Verbos only has sines, yet the Verbos has more partials (8 I believe?) and is a contained unit. Also, the RxMx works slightly differently from the scanning mixer in the HO, which may or may not be helpful in your case. Oh, and you get a strike input with the RxMx which is quite a lot of fun.
I’ve been thinking for a long time about whether to buy the HO or a second Stages or even both but space constraints kind of saved me from that decision for the time being.