The glasses should not be an issue. We all wear shades in the sun and many people wear glasses. You get used to them. I often forget I am wearing my shades because they are so light weight. I really don't see why its a big deal. The glasses I had to wear for Avatar were unnecessarily heavy and thick framed.
They should be able to make 3D glasses ultra light weight and for very low cost. They should almost be disposable in the sense they should cost next to nothing to replace.
Cost should really not be an issue. The glasses should be free or extremely cheap. I mean how much can they really cost to make ? A few dollars each I bet. Or pennies..
They are hugely mistaken if they think 3D will dramatically increase Blu Ray sales. It will help somewhat but 3D will be a niche product for a while. If they think the majority of HDTV owners are ready to scrap their TVs and players for 3D models by 2014, well that's just nonsense.