And using the TSFS and TFF example that is not in and of itself necessarily a gripe with a film. Notwithstanding that TSFS is the better film anyway, but in those two stories the Klingons were not the point of the film. What the primary characters and the crew were doing was the point.
Kruge and Klaa were there mostly to inject a little heightened drama into the story. But they were not THE story itself. This is the same as Nero in ST09. Nero was never the main point. Him being Romulan was never the point of the story in that film. The story of Kirk/Spock and the crew was, just as it was in TSFS and TFF.
'If the Apocalypse starts, beep me!' - Buffy Summers
'The sky's the limit.....' Jean-Luc Picard, 'All Good Things'
courtesy of Saquist