I can support this, but a few things.
You're gonna need a few more people active if you really want to get anywhere.
Could you give me an example of describing your character?
There will always be those few that even though the follow the rules, they will absolutely refuse to accept it, and probably do something irrational like leave, talk poorly about the website and such, all because they didn't win in a simple RP duel. You could overcome this by having judges/adjudicators/mods etc. moderate the fight and settle any disputes during the duel and decide the ultimate winner.
Aside from those things I can support this.