Ask one of the non official server hosters to do this. It sounds fun and I'm sure people would contribute to make it possible. Would have to be on the arena map so you can't hide at the edge behind a tree or something.
I'd hate to have rules but you would have to do NO 13 shield skill
, just so it is a measure of player skill and survivability rather than who can stay alive longest and then shank the second last man standing with a rondel.
I know i'd get knocked out right away but it'd still be fun!
+1