The producers and writers should have only used the Borg for Scorpion I and II. I just don't find the Janeway character clever enough to defeat the Borg at every turn. As far as the weapons are concerned. The armor and torpedoes could have been developed by another race in the Delta quadrant and the crew of Voyager only obtained the technology.
There was post a few months back, I can't remember who posted it but I thought it would fitting end to Voyager series. Everything in the Endgame happens but with a little longer ending. Once Voyager makes it through the conduit and destroys the sphere. It quickly pans over to a couple of Q's watching the events transpire. One Q turns to other and says "I told you they would make back from the Delta quadrant!!" The second Q turns to first Q "You want to go best 2 out of 3?" First Q "Sure, but let's send Voyager to Gamma quadrant this time." and snaps his fingers a Voyager disappears.
That would the better ending.