I love the Particle system, it reminds me of Emotion by Adrian M and Claire B. I would love to see this evolve. I have many ideas, here are a few.

1. It would be really useful if we could import an OBJ for collisions. This would allow us to have particles interact with real-world objects.

2. Import OBJ emitter, again allowing particles to interact with real-world objects.

3. Emitter follow a path (like in AE) either over time or from interaction, allowing us to trace real-world objects.

Thanks for the great feature