A possible new mode for 1.0 or after 1.0

Just got done watching “ActionRPG” YouTube video of his interview with Thomas for an inside look of wickeds future. One of the topics was PvP. I’m not huge on PvP but because Thomas mentioned “this is our ultimate sandbox to go bananas and experiment with endless possibilities” I thought this idea may be cool. Not only would it be cool to duel 1v1 in any area of your choosing, but having arena style duels with preset locations to either 1v1 or 2v2 etc colosseum style. Also I thought of a mode where maybe it could be castle siege style against another player with a larger scale fight with npcs fighting alongside you on either side of the battle.