The fifth TNG movie that never was

Spiner himself explained,...

https://memory-alpha.fandom.com/wiki/Undeveloped_Star_Trek_projects#Nemesis_follow-up

Undeveloped Star Trek projects

Many projects have been partially developed for Star Trek, beginning in the 1970s. There have also been deleted scenes for completed projects. The God Thing (1975) Star Trek: Planet of the Titans (1976-1977) Star Trek III (1980) Star Trek: The First Adventure (1989) Star Trek: IMAX (1997) Star Trek: The Beginning (2005) Star Trek 4 (alternate reality) (2019) The notion of a Star Trek film was originally considered amid the making of TOS Season 2, while DeForest Kelley, Gene Roddenberry, and Greg

Memory Alpha

So as everyone else has said … yuck!

But then I quickly remembered “… All good things”. Time travel, big CGI thing in the sky, reuniting with old characters (Tasha, O’Brien) … and it works very well, especially as a send off.

I’m thinking that there’s a kernel in there as a farewell to TNG era trek. Maybe not something where Picard becomes a literal Time Lord, but more where a drastic event has forced time-bending onto everyone at the epi-center of the event and any attempt of take advantage of it also entails some cost and the only way to fix the “breaking of time” is to do something incredibly starfleet.

There’s no evil per se just things breaking and people taking advantage of it. And Borg 🤷 .