I would like to dispute the argument that Voyager was the only way that the Maquis could have returned home. There were plenty of civilizations in the DQ that would have loved to have access to Maquis technical knowledge. These people were scavengers who knew how to get by on few resources. As Seska herself argued, the Maquis knew how to make a deal. Not only could they have returned home without Voyager, it probably would have taken them less than 23 years.
I think that Learning Curve could have made for an interesting turning point in the series. I think it would have been interesting if Dalby and co snapped, and decided that they had had enough of Janeway's Starfleet BS.
Given that Learning Curve was the season finale, suppose Janeway's attempt to force the Maquis to be more Starfleet backfired. Instead it had the opposite effect of pushing them away. The end result being that the Maquis members decide to go off and find their own way home. How might Janeway have responded to the notion that her own actions had the result of splitting the crew appart? Would Chakotay, despite his agreement with Janeway, feel obligated to abide by the decision of his people and help lead them home without Voyager?