People have already raised your ideas in the past, but I hate to say it, your ideas don't fit with the style of gameplay SE is developing with ARR.

Especially your part about 'open world duels' - oh goddess no. That was one thing I couldn't stand about The Old Republic, being hassled by idiots trying to duel me every few seconds (on a PvE designated server too no less!),and I'm so glad I don't have to worry about that nonsense in ARR. Keep PvP out of the main game as separate content which it should be. This is Final Fantasy after all, not Streetfighter. If you're after one-on-one open world dueling, then FFXIV ARR isn't for you.