It entirely changed where Seven, Raffi and Picard were in their lives. Far more than what would happen in a year. It wrote out Laris in the first episode... I guess Picard left her hanging one year later and stuck with Beverly and his son? It dismissed the Jurati Borg a "weird shit", retconned (via twitter) that Transwarp conduit to be the Delta Quadrant Borg, and brought back the real Borg.No it didn't.
It brought revamped uniforms (yes they are different than S2), revamped sets, and revamped ships. All for a season that takes place, ostensible, about a year later.
They kept the few things that worked and tossed everything else to tell a TNG 8 Season 8 serialized story.