FYI: Supper and I have released our English language patch for Magic Knight Rayearth on the Game Gear. This includes a bunch of assembly hacks to expand menus and reallocate space for text. Combined with the great graphics work, and a hopefully competent script, we have what I think is a great little translation patch.
The game takes about 5 hours to complete, putting it on the short side for even a portable RPG. Supper has speculated that the game was cut short at the last moment, and I wouldn't be surprised since it was developed alongside the Saturn game, and in conjunction with the release of a branded console. As it is, it's a fun way to spend an afternoon, especially if you're a fan of the original manga/anime series.
I still need to update my projects page, but
the patch is currently live at RHDN. There is also
a preview video I posted a couple days ago on YouTube.