I really love the idea of a VerbFactor. I definitely like the idea of a charcoal gray color for the VerbFactor. Here are 10 ideas for a good selection of reverbs:
6. Modulation [choice of Vibrato, Chorus, Flanger, or Phaser for the tail]
9. Studio [2016, PCM 70 Hall, H8000]
10. Black Hole [Put some insane reverb effects here]
I like the ModFactor approach where each reverb mode can have different types…this way you can have lots of different reverbs available.