I would approach the AK’s limited polyphony as a reason to explore p-locking different intervals of the 2 osc pitch and the 5th and octaves supplied by the subs… and both filters tracking in self oscillation.
If you think about it that way, The AK is actually capable of at least 16 simultaneous notes. This is technically more than what you get with a guitar.
Add to this the technical abilities granted via the sequencer, and you have an extremely expressive instrument.
Also, it’s worth noting that many great compositions have been made with 4 parts. The AK’s great for melismatic stuff, ala Mass in B minor (Bach)