There is a misunderstanding. There are two different phenomena:
Lens flare: This describes various reflections within the lens optics of a camera. The so called "ghosts" of a light source are placed towards the image center.
Glare: These are the little "stars" you are talking about that come from imperfections on the lens surface or the camera chip.
In Enscape: We support lens flares for all bright surfaces. We support glare in a special case for the sun (the star that you see when you look into it) and bloom for all bright surfaces. The "gaussian" style bloom in Enscape is not as beautiful as what you get in a camera (or offline raytracers) with the little star shapes. This is subject to improvement!