I was thinking mostly about the colors but also the dimensions I guess. The colors fit none of the Mario games I've played and some of the props are out of size, the pipes are too big for example. The level design doesn't feel right either.

Would be cool to have the mod made in boxes as all the 2D Mario games, it would be very easy to work with and feel more iconic. Tori is about 2.8 Units high so one box would be 1.4x1.4 Units. Maybe even go so far as to find and copy a real level from the original Super Mario Bros.