Bangai-O Spirits
I happened to be able to play the original Bangai-O a while back, and it's really an amazing game - controlled on two axes (ala Robotron), Bangai-O combines goofball Japanese themes and Treasure's infamous knack for high-octane shooters. When I heard they were making a new one for the DS (with wireless multiplayer! and a level editor!) I was beside myself. But! I recently learned that Spirits has removed the second axis; you can only fire in the direction you move. It may seem like a small change, but the two-axis dynamic was a key part of the old game, and now I'm a bit wary about this new one ... but I'll still give it a look.
Progress: Gave Up