Not sure if it's the same thing. It would be an interesting feature where you could go head to head against any player you wish just for the fun of it, even if it wasn't for pvp points or the ability to plunder. I wouldn't mind fighting against my guildmates just to see who is the better fighter and to help learn based on another players tactics in a live battle. As this would be a separate feature where players online would fight each other it wouldn't have any effect on pvp like the delay issues with giving a player time to control their own defense.
Huge +1 from me.