[quote=@Descartes]
All fights are now to be held inside a steel cage.

DIS SUMMER. HELL. IN. A . CELL.

Joking aside, the environment should play a big factor in how clever an opponent is. That is, it takes some skill to utilize all of the environment; whether that means kicking up dust, fighting so that your opponent has to go uphill to reach you, or making it so that the sun is in his eyes and not yours.
[/quote]

Exactly.

I don't know what the Tilt Building is (I presume it's a building that flips over or something), but none of my arenas have any 'fuck you and die' features (with the possible exception of the Recursive Gameboard, but that has rule variants to eliminate the offending element). A reasonably alert combatant should be able to navigate and fight in all of them without fear. A few of them have stationary and clearly marked hazards (Onslaught Station has traps), and few others have puzzle-base obstacles (the Clockwork Fairground). All intended to add a tactical, psychological element to the fight. The clever opponent will have an advantage, so long as they aren't too clever by half. No feature by itself is hazardous - it is the enemy combatant exploiting those features that will create danger.