If you loved Broken Blade: Fortress of Lamentation, try Macross 7: The Galaxy Is Calling Me!
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.
You already loved

Broken Blade: Fortress of Lamentation
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Macross 7: The Galaxy Is Calling Me!
What they share
Both films are directed by Tetsuro Amino, and they sit in Action / Animation / Science Fiction territory. If that's the register that drew you to Broken Blade: Fortress of Lamentation, the second film will land in a comparable space — through a different lens.
What Macross 7: The Galaxy Is Calling Me! is
You're Basara, rock star in space, singing to anyone who'll listen. You land on a frozen planet to share your gifts, but locals imprison you. Then a child recognizes your music, and a strange wail calls from the mountains. Shimoda's direction keeps it moving. It leaves one wondering where else music fits.