The disappointment with Voyager is that it never took advantage of the idea that they were alone in another part of the galaxy. Many of the story lines could have easily taken place on TNG or TOS. This isn't bad, just disappointing. Since the acting and writing was not as consistently good as TNG and TOS, VOY always seemed lacking to me. It seems like the last few seasons were failed attempts to recapture what TNG had. This was taken to such an extreme that there are actually TNG episodes in VOY. I just watched Inside Man. That must have been a slap in the face to the VOY cast.
Season 5 is an improvement over Seasons 3 and 4, but it is all down hill from there.
One notable exception in 6 & 7 is Blink of an Eye. This is one of those episodes that could have easily been on any other Trek. Nevertheless, it is an interesting premise, well-executed too.
As someone else mentioned, the issue with the last few seasons is a lack of focus. Major character development story lines appear, but then disappear without reason. It becomes frustrating to the point that you just want them to get home already.
You have to watch them all though. You have to.
