It’s different, for sure. Can’t say I’ve seen this kind of blind effect in any other game. I do see one flaw in the design, and that’s the HUD elements. During the blind, you can still see enemy and friendly health bars, waypoints, and the radar. Since the blind doesn’t hinder movement, fire rate, abilities, or anything else, a blinded player could still be just as deadly. For example: Rath could easily activate his Spin to Win, move towards enemy nameplates he can see, and still be just as effective. Montana just needs to point his minigun in the direction of enemy nameplates and rack up kills. And that radar! A player familiar with the map could navigate the terrain via radar alone.
Just a suggestion, but I would look into having the blind effect disable HUD elements for the duration, with the exception of the aiming reticle. I understand this might be a programming nightmare, but it’s worth investigating.