Whatever Dead Fish's reason was, call it what it is, lazy subbing work. I know it's hard work, but either complete a project or don't bother. It's one thing if circumstances get in the way, but there's no excuse for that. No one should just pick and choose what they think is worth subbing. If you start a project, and you've done most of the work, then see it through to the end. This is why we don't have all the Kamen Rider/Super Sentai movies in recent years subbed. And I have no idea why. The fansub groups, mostly Over-Time, translated the entire series and sometimes a few extras. They have all the resources. Subbing the movies should not be a problem. Even if they aren't necessary or even canon to the show, there are still people who want to watch them, and it sucks that TV-Nihon is the only option left.
Sorry for slightly changing topics. I didn't care for Dead Fish's weird translation decisions either. But I'd rather have an incomplete project that hopefully a competent group can finish, rather than be losing to a group that has questionable translating abilities.