Each voice you have has its own envelope, so imo I don't think you need an LPG, unless you want to use it to deal with some noise source you have.
Maybe a quantized CV source. Maybe you could change your sequencer to Euclidean circles for example, or Maleko Varigate 4+.
Imo you have a lot of gate sources to feed two voices.
But hey, I'm a beginner, there are people here with much more experience who will surely be able to help you better than me.