The beauty of modular, and Noise Engineering oscillators specifically, is in the modulation possibilities. The Manis doesn't have an assignable envelope like the Loquelic Iteritas Percido from what I can remember, just attack/decay I believe. Take a look at each of the Manis' inputs. Each of those is an opportunity to modulate a different parameter in different amounts and times. This is why you would want/need envelopes, LFOs, and random sources from the very beginning. Watch some of Baseck's videos on YouTube to get an idea how cool the NE oscillators are with lots of modulation.