If you loved Legend of the Galactic Heroes: Die Neue These - Intrigue 1, try The Legend of the Galactic Heroes: Die Neue These Seiran 1
A bridge between a film you've already seen and one most people haven't. The Legend of the Galactic Heroes: Die Neue These Seiran 1 has roughly 3.1× fewer votes than Legend of the Galactic Heroes: Die Neue These - Intrigue 1 — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.

Legend of the Galactic Heroes: Die Neue These - Intrigue 1

The Legend of the Galactic Heroes: Die Neue These Seiran 1
What they share
Both films are directed by Shunsuke Tada, and they both carry the cerebral, epic mood tags, and they sit in Animation / Science Fiction territory. If that's the register that drew you to Legend of the Galactic Heroes: Die Neue These - Intrigue 1, the second film will land in a comparable space — through a different lens.
What The Legend of the Galactic Heroes: Die Neue These Seiran 1 is
Star Wars if everyone's a scheming grand strategist. A never-ending war between the Galactic Empire and the Free Planets Alliance gives rise to two rival military geniuses. This anime offers clean, updated visuals for fans of twisty space opera.