[quote=@Skallagrim]
The Arena is a contest between two writers engaging in a form of mental chess. Inserting an X-factor, such as a dynamic battlefield that requires the fighters to fight that as well and which ultimately can result in a loss because of those dynamics, becomes a hindrance. The field should never be such a dominate factor in an arena fight that it can cause a loss. 
[/quote]

I severely disagree, but we can just fight in the battles we feel comfortable with. No point in forcing you to fight in dynamic locations.