I'll give some of those ideas a go!
Messed around with the first idea with pretty neat results! I wasn't trying to copy that exact sound, but just going for a synth pad / brass sound. It won't directly work in the VP4 since it uses 7 blocks, but you could definitely adapt it depending on needs.
Quick audio demo just playing guitar into it. Sorry, some clipping when I start to play harder, but mainly just because it's the first time I actually recorded from the FM9 and I wasn't paying attention to levels lol (and should have cut more bass) ~
First part of the demo has the Drive block at 50% mix, and then turned up to max for a second, and then the last part has it disabled (explained further below)
Signal chain is like so ~
Drive > Pitch > Filter > Chorus > PEQ > Multitap > Comp
DRIVE
Mix: 50% (adjust to taste; see below)
Level: 4.0
Type: Master-Fuzz
Drive: 10.00
Tone: 5.00
Bass: 7.85
High Cut: 20kHz
Clip Type: Hard
Bias: 1.0
PITCH
Mix: 50%
Type: Dual Detune
Detune 1: +10.2ct
Detune 2: -9.1ct
FILTER:
Level: -6 dB (turn down further if getting clipping)
Type: Low-Pass
Order: 4th
Frequency: 20Hz
Q: 0.335
FILTER FREQUENCY MODIFIER
Source 1: Envelope Follower
Attack: 93ms
Release: 500ms
Start: 0%
Mid: 70%
Slope: 50%
Scale: 1.0
CHORUS
Type: Dimension 2
Mix: 50%
PEQ
Frequency 1: 260Hz
Gain 1: -10 dB (this may need to be much lower!)
MULTITAP
Mix; 50%
Type: Shadows Taps
All feedbacks set 70 to 85%
Filters all the way open
COMP
Type: Optical Compressor
Threshold: -46 dB
Level: -6 dB (again, might need to be lower depending on your setup)
Some notes ~
On the modifier for the Filter Frequency, change the Mid control depending on your guitar's output. Change the Min control to open the filter. Change the Attack and Release like you would a synth's filter envelope.
On the Filter itself, the Q plays a big part. Lower it for softer sounds and raise it for more air. Also, a higher Q combined with a faster attack and release on the filter frequency modifier will get you closer to those stab-y sounds.
On the Drive block, change the Mix level to get a softer or harsher sound (more harmonics). At 100%, it is pretty square-wave-y, but doesn't sound great with a lot of chords, especially tighter voicings. 0% sounds a little less synth-y, but still works and is very smooth.
For the Chorus, I just did a Dimension style chorus at default settings. I tried the "map rate to the pitch follower" thing, and it works well for single notes, but does not work for chords, so I left it off.
I just left the Compressor mostly at defaults for that type for some basic control of the sound, but you can definitely go for more extreme, limiter-like settings for increased sustain. You'll probably want to cut more low-end with the PEQ first though. The high feedback multitap delay before the compressor helps with sustain too.
And in general, I'd say to keep your playing dynamics really even to get the effect across. You may also have to mess with your guitar volume.
So yeah, idk nothing amazing but I think it sounds cool, and is a good start! Good luck!