I thought the same thing to myself after noticing the rectangular border around the movie that appears in the smoke. There shouldnt be any border, let alone a rectangular border.
I don’t see this becoming anything more than a novelty. Try reading the tiny text of EVE Online on a smoke screen. Also–as Anthony pointed out–having a clear screen you can see through isn’t conducive to maintaining any kind of focus on what it is you’re trying to watch. Clear screens have been technologically feasible for a while, but they don’t make them because they’re not practical.