What Elder Scrolls Online lacks the most is small – scale PvP.
It is terribly unfair that the PvE content is full and complete and the PvP one is NOT.
To make it easier for you to understand... To a PvPer Cyrodil is what a map full of basic quest is to a PvEer. How long would a PvE player play this game if there wasnt any additional content like group/raid dungeons that require specific tactics? Not very long! Thats why PvPers will leave this game shortly after release or they wont buy it at all.
Massive PvP is fun but its not enough to satisfy a PvP player. PvPer needs some kind of competition, a place where he/she can test his skill, some kind of challenge...
You have created such a large and magnificient game, but if you dont add two – three mini games it will never be complete, because at this moment PvP content is unfinished!
I'm sure that simple mini games would save this game.