so I read these post and can not help but notice most of the responses are from people who clearly have never been in area style battles or pvp in general. I will explain why this system is not going to work out.
A duty finder pvp system with 4 mans only is not going to attract any pvp mmo players. Most like group battles of a dozen or more and open world style pvp, forcing a tank healer dps group is just stupid. Anyone who has a clue will send all 3 after the healer right off the bat. healer-dps-dps-tank is the kill order. so people can make premades but still only 4x4 and a duty finder wait of well I guess we will see what the wait will be 15 mins, a hour who knows. so now solo players will have even less motivation to play this game or resub cause we already know the game has a tank shortage issue. Oh and the well do you want to fight 4 sch sure go for it, anyone who did arena battles before knows the most effective combo of players will be found out rather fast.