What does get my goat of course is the ‘necessarily enormous, YAYYYYY! the plan worked (finally), Earth wus saved (say, by Keanu Reeves.. sorry, K.R.), the bad guys have been unceremoniously dispatched, along with any sacrificial lambs, whilst those in hospital are ‘sitting upright’.. and there’s even a hint of mat-ri-mon-y in the air’ ..type endings.
OK, I’m exaggerating. Or am I? At any rate a satisfying conclusion doesn’t have to be overly emphatic.

It’s axiomatic of story structure tension that it SEEKS to be resolved, and there must BE an ending. But surely that primarily means ‘for the viewer’, not necessarily for the events and characters, and not en masse.
Perhaps, it’s ‘questions’ that need to be resolved, over ‘outcomes’ per se.

Wow. It’s easy to crap on, hey! But a softly softly approach, maybe with fewer ‘truck collisions’, might work too.. : >