Yeah mecha is almost more so a medium to tell different genres in than a classic genre in of itself. Though I think a lot I'd media is going that way. Marvel have shown that you can make superhero films in different genres rather than 'superhero film' be the genre.So, in the case of mecha too, the robot conflict is often to quite a large degree a vehicle to tell the real story that the writers want to tell.
Yeah and if you wanted a straight up retelling compilation film you would be disappointed but personally straight up retelling compilation films are a complete waste of time in my view. I've never seen one I thought was worthwhile. Hi Evos value comes precisely because it reframes the entire story onto an internal conflict of Rentons. Which is interesting and new.That's really interesting, because that film cops a lot of flak.
I'm keen to see it myself at some point.
My own personal favourite compilation film is the second Gurren Lagann movie The Lights in the Sky are Stars. It's so much more than just a compilation film.
Gurren Lagann and Mobile Suit Gundam are interesting examples where the first GL and first 2 MSG ruin the great storytelling of the series. And the final films of both work precisely because they're not really compilation films anymore but do something different. In GLs case I would still rather watch the series, i like the film but dont view it as essential. But in MSG case i would tell people to watch the 3rd film after watching the series to get the full story experience.