u r first suggestion... I Like But Not The Place My Idea To Make Seprate map for duel Idk Id But thats a big place in sky just We Tele There And It Gives The choice of duel weapon To The player Who Got invited for duel in dialog box

And 2Nd Duel Cmd Is Not neccesarry if ppl Wanna duel in Team Then Can Duel In many Places So No For That 2 Suggestion....