Well, we're talking about the interpolation in between frames, so this new behavior just gets rid of the small "arbitrary" randomness within a frame (based on frame rate, particles speed, simulation speed and emission rate). It allows to have a nice steady stream of particles instead of something a bit noisy.
After that if you want to add randomness to the emission you can control the emission rate with a cue (with a noise function).
We could now add a randomness factor on the particles emission rate do do what you are talking about (like for life random, speed random, ect). But that would mean adding two new parameters:
- emission rate variation
- emission rate variation speed
Those two parameters can easily be reproduced by a cue with a noise function, so the questions are:
Is adding those two parameters a significant time gain for the user?
Is adding randomness in the emission rate something that is done often by graphic designers? Is it an option we see often in other software with particles?
What do you think @Skinnytorus, @vincent.armongn ?