I'm watching the original Gundam and it's making me more curious as to how the "mech" genre evolved. It seems to mark this transitional period between the kind of shows that were summarized by the Krypton Force Trailer Guy and later shows that took a more directly sci-fi/thematically sophisticated tone. It's well-written, the soundtrack is absolutely boss, but the animation isn't far beyond it's predecessors; beyond the two obvious iconic mech designs everything still looks very 70s. It's striking how humble it looks, how it doesn't measure up to the hole it's punched in Japanese culture.
Sometimes things are just like that. Sort of the opposite of stuff like the original Star Trek, where it's immediately and visually obvious that it was something that was very different from the TV shows that came before.