I'm curious about the tracer: the 3D nature of it is awesome, but am I the only one who thinks that it looks a bit like a string of cotton balls? Obviously it's all still WIP, but just thought I'd post this in case no one else had.
This picture may not be the best source to compare to (obviously because the camera won't pick up a real picture) but a difference can be noted
Awesome update; your dedication to this sim is commendable.