[MattKan]

Works for me. Definitely looks nicer with the wall tiling, and I never did get that carpet edge around it, so it looks good without that.

The biggest issue is something that didn't get changed: the perspective of the tip of the top of the arena. It looks awkward and should be fixed somehow. Bottom looks loads better though.

And I just noticed that it's a bit smaller than the old arena. Maybe if you made it a couple of tiles bigger...