I've been wishing that there was a little more to PvP as well.
I was hoping for more of a game like Brennar from FFXI, which was basically kind of football… You had to grab an item and drop it in the goal, but to open the goal you had to take down one of the other team's players.

Also, having to run a gauntlet like Crystal Tower but having the three teams race or compete somehow would be really fun.