got my new shield yesterday...CAME FAST. the vent is located in front of what I refer to as the nose cone so it does not impede vision at all it is 1" tall by 1 3/4" wide and when it is open the opening is 1/4" , you can also see they changed the down curvature of the shield as well which according to their engineers is to reduce glare, very easy to change, no tools needed, can do it in a minute or less. The new shield does not have the black plastic trim buttons where it pivots which IMO gives it a cleaner look.
Anyone who has one of these helmets knows this helmet is incredibly warm, yes it has venting, I do not wear a baklava under this helmet and to be honest I cannot feel or notice any air movement in the helmet, I do have the zipper chin vent on the skirt and always have it open when I ride, and more often than not would ride with shield cracked open. IMO this vent is the answer, its right in front of nose cone, will direct fresh cool air at your face and may also help draw air in or out of the existing vents allowing for better air movement through the helmet. I have never had my helmet any higher than the lowest setting and I believe this will be the answer and provide a better marriage between the warmth the helmet provides and the lack of fresh air movement it so very much needs.
I havent played around with posting pictures yet, so if anyone wants to PM me their Cel number I did take series of pics and would be more than happy to send them. Or if anyone who is familiar with posting pictures via texts I can send them to you also to put them up. And yes I do believe this shield fits all oxygen helmets, I paid $179 for the shield