People have brought up an interesting point with regards to rescaling ships. That could be seen as an "error" that needs to be corrected, as opposed to simply 'jazzing' up the show or trying to inject new life into it. I agree that some scales are definitely off.
This has been in the back of my mind for a while, and others brought it up: how much more time and money would it have taken to give us two versions of each episode: one as it originally was, and one with interpretations based on what some fans wanted (rescaling ships, not using the same shot ten times in an episode)?
This is a serious (i.e. not rhetorical) question. Not every effect shot would have had to have been 'reimaged'. How long does it take to produce, etc. the average effect shot in TNG? How many of us would have been willing to wait a little longer and pay a little more for two versions of the episode? I know I would. I've waited this long already!