Early Butterfly flock using nParticles and instancing

Been trying to simulate a flock/crowd of butterflies using Maya nParticles and instancing a simple animated geometry.
So far I had to add a better butterfly pointing vector as the default set is limited, butterflies do not pitch or dive steeply which the most usable default option available, aim by velocity, does. I had to write a custom expression to get the butterfly to get them to fly flatter.
Wasn't too pleased with the result at the moment, looks like a mess, especially the flapping which does not relate to the speed or change of direction of the butterflies.
Also, as expected, they behave like a bunch of particles, which is random enough for shots such as when they are collecting underneath the umbrella, obviously needs more tweaking for that.

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