Why would folks in the DQ help out VOY? Same reason GQ folks were okay meeting with the Feds in DS9 and making deals with them.
They made deals because the Federation has something to offer the people in the Gamma Quadrant natives whether it just be diplomatic relations or trade. Voyager was one fairly small ship alone, it shouldn't have really been able to offer anyone very much. And if it did have something to offer aliens in return for help with supplies and repairs - then that's exactly what I would have wanted. Not for the ship to magically fix itself between episodes.
Voyager pushed the envelope of very high-concept, complex sci-fi stories that were unlike ones we'd seen on TNG. This approach was important as it served the part of the Star Trek audience that wasn't interested in the heavy continuity and story arc format of DS9. It was a good thing for the overall franchise that there was diversity in tone between the two shows.
I agree in some respects. I definitely value "Voyager" for some of the fantastic hi-concept stuff we got with it, although I don't think they were that unlike season 6/7 of TNG.
As for Voyager being an option for those who weren't interested in the format of DS9....yes, but TNG already had that base covered. Voyager should have done SOMETHING with its format to separate itself from TNG so it wouldn't get called "TNG-lite" by so many people.
If by "high-concept and complex" you mean "techno-babbling their way out of problems practically every week," then I agree.
That is true to an extent that there was a lot of technobabble although I feel that definitely waned after the first few seasons.
Overall though I think of Voyager almost like a continuation of TNG season 6/7 which could be considered "TNG-lite" too in a way since in those seasons they moved towards more kerazy high-concept stories rather than the political intrigue and commentary of the earlier seasons.
Voyager wasn't that interested in injecting much depth into its stories a la TNG season 3 or DS9, it just wanted to entertain us with whatever fantastic science-fiction concept had been thought up that week, not unlike many episodes in TNG season 6 and 7 except I think Voyager really refined it to an artform mosty starting around season 4.
Voyager really did come up with a lot of single episode story ideas that impressed me in their originality and make me appreciate the show in many ways when I look at it on an episode by episode basis. If I look at DS9 on an episode by episode basis, the creativity in the stories don't necessarily impress me very much. Its only when I look at the show as a whole and the feeling of reality, continuity, character and story progression and ambition that it becomes clear its my favorite trek show. But when I'm looking at Voyager on an episode by episode basis, the creativity of the single episodes ideas really do impress me a lot more than when I look at it as a whole show.
The concepts found in episodes like
Faces, Meld, Deadlock, Tuvix, Before and After, Year of Hell, Mortal Coil, Retrospect, Living Witness, The Killing Game, Night, Latent Image, Bliss, Barge of the Dead, Tinker Tenor Doctor Spy, Ashes to Ashes, Blink of an Eye, Child's Play, Muse, Critical Care, The Void (and really many more) shows me that even though Voyager did not succeed in living up to its premise and undoubtedly had a lot of trouble with underambitious show runners, the creative cylinders were still firing very hot in the Voyager's writing room.