The NFL Network did it again in 2004 at the very least. They miced up a bunch of players and coaches to add to the audio.As far as I know the NFL only did the Jets-Dolphins game in 1980 without announcers so it was a lot more than 20 years ago and it sucked. It might be better today because you could get a lot more information on the screen but I still don't think it would work very well. I think announcers add a lot to the game although I would prefer them to be there and not at a remote site. Sure they sometimes say stupid and/or obvious stuff but I can just filter that out as background noise.