It’s a TV reunion special. I think it accomplished everything it set out to do - reunite the cast, bring back an old bad guy for another thrashing, and show that the TNG crew’s lives and adventures have continuing impact on the Star Trek world. Also heaping some disses on the first two PIC seasons. And the new characters seem cool.
I wish it had set out to tell an original story instead.
They would have had a bigger impact if the previous season hadn’t turned them into friends who were then completely forgotten about.
One scene saying something like ‘Oh, the Borg are here. I wonder why Agnes didn’t contact us first’ would have made it a bit more believable, rather than ‘We made friends with the Borg but now we’re scared when they’re mentioned’.