Yeah, 1024x512 would be nice. Also, what about a mode that uses pseudo 8x4, 8x2, and 8x1 subpalette format? Instead of the 8x8 format. It's still 8x8, but you use hsync to reposition the tilemap, on the same set of tiles but a different subpalettes. More color freedom, at the expensive of some vram for a larger tilemap.