The last couple levels cracked me up. The game seemed like it was alternating between a game where the challenge is controlling multiple entities or the challenge is strategically splitting. I liked how the levels shifted between the two a bit but also thought "ah, if I could split here but this level started pre-split"
It'd be interesting to see how you'd handle levels where you start out split at a much higher number.. maybe zoomed out too, with a bigger map where you're managing multiple groups. Neat idea!