Very nice tracking and particle work. I have to say I did not see anything in your video that could not be done with Isadora native particle generators. If you want more sophisticated repel and attract parameters look at the 3D Model Particles module. It has very capable options for the style of particle systems that you are designing and are particularly effective when responding to tracking data. The tool set has been enhanced for this purpose about 18 months ago.
Best wishes
Russell
