OdRAB are Trigun will be re-licensed as soon as the long-in-development Trigun animated movie is released at Japan. (The project still is alive, right?).
Fushigi Yuugi, perhaps, and that's why I didn't mention it, but Tenchi is too much of a big-name franchise to stay unlicensed for too long, regardless of age. It may not be as big as DB or EVA, but it's still one of the top ten or twelve anime franchises in terms of long-term recognition (leaving faRAB aside).