Example of unique concepts please?
I guess we have to agree to disagree, since you have such a high opinion of the show, and that's fine--that's why these kinds of debate are fun. But I am not going from fond memory, I am working from a position of having crammed in every episode, in order, in a period of a month or so.
I am not coming from fond memory either. I watched nearly all of Voyager within the space of about 2 months one summer and I found myself extremely frustrated by the lack of ambition, the carelessness towards continuity and cohesion, and just generally how much it paled in comparison to DS9. But after a while, I came to accept Voyager for what it is instead of dwelling on what it should have been. Its basically a continuation of season 6/7-esque TNG with some slightly more lifelike characters and yes, a little less consistency but not a whole lot less.
Regarding unique concepts, you can't be serious if you can't see how Voyager often gave us very cool, interesting and new stories. It was in the show's nature considering it took TNG's two hi-concept story writers (Braga and Menosky) and was following in the footsteps of TNG's relatively hi-concept later years. So here are some of VOY's greatest concept episodes:-
Faces - The concept of a character torn between two backgrounds literally being split in two, and having to face both sides of eachother. And its completely different from the "good vs evil" Kirk angle.
Lifesigns- A woman ravaged by illness finds new life in holographic form and decides that a few weeks spent functioning as a fully healthy hologram is better than years more suffering in her real body. Both hi-concept and poignant, something VOY really pulled off well sometimes.
Deadlock - The ship duplicated but sharing the same power source. Either one is destroyed or both are. Fantastically hi-concept and an episode superior to both "Starship Down" and "Disaster" in my estimation.
Tuvix- Two people combined into one who has his own personality and right to live. The ethical considerations of this episode were really quite thoughtful and the concept that allowed them fun and what Trek does great.
Unity- Another view of the collective consciousness and the benefits it can bring to a divided people. This was a wholly unique and different look at the Borg and really made me think.
Distant Origin- Sure, it gets a bit silly but sci-fi can be silly sometimes when its trying to explore issues as interesting as the harms of strict adherence to dogma. A story combining dinosaur aliens with a real issue, good stuff.
Year of Hell - A crew frozen in time that constantly attempts to change time around them in order to regain the former glory of their people, and a man not content until he brings his wife and daughter back into existence? Sure, the reset button was annoying but that's a problem for the show, as a two-parter on an episode basis - both unique and well done.
Mortail Coil - A character with religious convictions and the belief he will meet his family again in heaven dies and is revived only to realize the afterlife does not exist. This episode is refereshingly unapologetic in its view, and the concept was both wonderful and daring.
Living Witness- A crewmember "awakened" 700 years in the future to find the actions of his crew had become distorted from the passage of time, and is determined to set the record straight. Another great concept.
Latent Image- The issue of holograms and the rights of holograms were well explored in Voyager in a series of wonderful episodes. The idea of a hologram that has evolved to the point where he would pick to save a friend over an acquaintance in a medical emergency and experiences a crisis because of it, coming up against the prejudices of the crew. Wonderful stuff, episodes like this really made Voyager worth watching for me and I can't see most sci-fi shows doing work approaching this quality.
Course: Oblivion - A decently executed episode with a fantastic concept - the idea that Voyager was duplicated and those duplicates lost their early memories and began to believe they were the real article. Wonderful.
One Small Step - The subspace graveyard filled with the remnants of thousands of alien ships was great, and it gave us a really good Seven of Nine story where she comes to appreciate the importance of history and not just the here and now.
Ashes to Ashes - One of my favorite concepts in the show. A dead crewman reanimated by another species comes back to Voyager only to realize she's changed and may not belong. It didn't do everything it could with the concept, but the idea was still fantastic.
Muse - Another one of my favorite Trek concepts and indeed episodes. A crewman crash lands and inspires a poet that aims to use his work to prevent a war on his world. This is classically beautiful and refined trek.
Those are just some of the great concepts I find in Voyager, and as I said I enjoy them on an episode by episode basis. The show overall is a disappointment, I accept that. But I don't let the lack of cohesion obscure how good some of the individual writing in these episodes were. In my opinion seasons 1, 4, 5 and 6 all had way more good episodes than bad ones. For awful episodes like "Cathexis", "Demon", "The Fight" and "Fury", there were episodes like "Faces", "Living Witness", "Latent Image", "Dark Frontier", "Barge of the Dead", "Critical Care" to make it all worth it.
I probably place VOY below TNG because I do find it less consistent and I do judge it down overall as a show due to its failure to live up to its concept. But it had a lot of fantastic episodes that other science-fiction shows couldn't even begin to make. And really, I like all Trek, I don't think most science-fiction shows can come up to the level of even its least greatest show.
VOY was not worlds away from TNG by any stretch of the imagination, and I can enjoy them both on the same level just fine.