In casual play or not, people are still going to find a way to play cheap in any mod. Just because there's a ring or a box won't stop people from running in that ring or box. Granted they can't run easily, but with practice you'll soon have people who are legitametly good at running in a confined area.

This is speaking solely from experience. I'm in no way a wushu expert.

My two cents would be to try to enforce (using the word lightly). More like show people the correct, or better said sportsmanlike way to play wushu like mods. (Not abusing openers, cb'ing as much as you can, orthodox or not. And generally not being a dick to other players.)

In situations like tournaments and duels where people are more inclined to
"play to win" things like boxshu and wushu with a ring should definitely be applied. The dimensions of which are not for me to say.

Ideally everyone would just be sportsmanlike/honorable or whatever you want to call it, But eh.

Again, my opinion, I'm no wushu authority.

\o/