"Allegiant isn't the last Divergent movie and that's unfortunate.
These movies are churned out once a year, they don’t make that much money in comparison to other big budget fare, and they always leave you with a promise of more to come. It’s almost like there’s supposed to be deepening to the corners of whatever cobbled-together futuristic dystopia the series sports. The problem here is that the story has nowhere to run or hide now, so things become cyclical and border on self-parody. "
Full review can be read here.