It seems that there's pretty firm agreement now that the exterior shots by HTV in Season 2 don't match up to the quality that CBS-D put out in Season 1 (and I agree). I think it's in their best interest to address this (somehow) in seasons 4 and 6.
That said, episodes are more than exterior shots; they're - what - 10% of an episode, if that?
Everything else about season 2 seems gravy. All of the interior shots look fantastic, as far as I can tell. Color and resolution looks as good as we can ask for. Let's assume no major audio issues. Plus we get the extended Measure of a Man, gag reel, the cast roundtable, etc, etc.
It sucks that the exterior stuff doesn't match up - it really does. But it's still friggin TNG, a show many of us grew up with, in HD!! The stories, dialogue, characters are all still here, which is why we keep watching it, right??