The Vital FX are already there, programmed, and they’re great. They work better than a lot of default plugins in my DAW for the purpose they serve. So, since they’re already made, why not make them into plugins usable outside of Vital? I would really like to see this idea become a reality.
I know it’s not Vital, but Surge XT soft synth has a standalone VST effects package that might fit your needs. Worth a look?
if audio input were added as an oscillator source, it would knock my socks off.