The M&L in-game art has been feeling a bit off to me lately. I guess everything just feels unnecessarily big and spread-out in BIS. Sprites are high-res, but with no added detail; they're just big. The sprites and the map layouts in SS felt much tighter and less clumsy.
I also don't like how the series has become less stylistic. In SS, everything was drawn in an original style, but in PiT and BIS, all the sprites feel like they're just traced from the 3D renders.
It's also noticeable in the color scheme -- M&L had a rather distinct palette, giving it a coherent, unified theme, while PiT and BIS just use the big bright official colors for everything, and it's just kinda all over the place.
For some reason, though, PiT and BIS turn Luigi blue. But the dancing is still good.
Hopefully a sprite-based console version would get them thinking more stylistically again.
You know, I'd really like to see a game (maybe an RPG) based on the cartoons and comic books. Except good.