I think TM2:Canyon is really missing a triangular arena (the flat grey ones) block. By triangular I mean an ordinary flat arena block cut in half through a diagonal. I've included a rough MSpaint sketch below. It would allow for much less "jagged" arena sections and even makes diagonal paths possible and seamless. Best of all, the block would be very, very easy to design and no additional blocks (for example, horizontally flipped versions) are required.
