An interesting poll at IGNPocket...

[Sandro]

IGNPocket has a poll about GBA. Basically, if you could change one thing about GBA, what would it be? Such options include a backlit screen, more powerful graphics hardware, louder speaker, overall look of the system, more buttons, etc. Me? I voted backlit screen.

[Evil Dr. Reef]

Backlit screen, hell yeah! I can't hardly see Castlevania COTM when I'm in the direct sunlight, much less my dark, dank, dungeon-like room.