Sorry I'm sure this has been asked before, but did they state why they didn't change the aspect ratio to 16:9, since this was shot on film? It seems like since they were doing the restoration/upgrade to HD they could have done that.
Yes, they could have reformatted the image areas of the camera negatives with some cropping of picture information at the top (and mostly the bottom).
In September 2011 Robert Meyer-Burnett twittered that he had seen a 16:9 reformatted episode study (I assume "Sins of the Father"), that it looked great, and 16:9 would probably win "by a landslide" if fans were given the choice to vote.
I'm also confident that the very first HD teaser (with the 16:9 VFX footage from ILM) suggested that reformatting into 16:9 was an option.
Regardless whether there is camera equipment left and right in the full shot bridge scenes, to look good in 16:9, it would require is to trim the 4:3 image area to get rid of the excessive overhead space and Data's crutch.
Since the restoration cost a lot of money I totally understand CBS' strategy to first release TNG in 4:3 and keep the option for a later re-release in reformatted 16:9.