I asked this question some time ago and it was looked ilke i solve trouble, but i decided to ask this again.
So, i think that it would be usefull to render sprites right on the screen.

For example, i want to move my sprite with camera, and particles may not to be effected.

Look here: i created entity in 3d and place it in front of camera. Entity creates particles. When camera is not rotate, everything looking ok

but as i rotate camera to the right direction(clockwise, by pan axis), i get


I think that render particles right on the screen would be able to solve this