If you loved Macross Delta: Passionate Walküre, try Macross Frontier: The Wings of Farewell
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

Macross Delta: Passionate Walküre
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Macross Frontier: The Wings of Farewell
What they share
Both films are directed by Hiroshi Tamada, Shoji Kawamori, and they both carry the uplifting mood tag, and they sit in Action / Animation / Romance / Science Fiction territory. If that's the register that drew you to Macross Delta: Passionate Walküre, the second film will land in a comparable space — through a different lens.
uplifting
What Macross Frontier: The Wings of Farewell is
Macross Frontier brings space opera drama. Ranka's career takes off as Sheryl's health declines. The film somehow ties up romance and war.