the very middle of Cyrodiil the imperial city should be 1 big Arena PVP area Roman style with 1 vs 1 / 2 vs 2 / 5 vs 5 and 12 vs 12 guild only PVP also only way of getting into it by running there from a fort in Campaign so it hard to get in with 3 entrances but other factions can camp yours so you must have forts to be able to get to the Arena PVP so fighting for forts will be a must
Then Deadric horde mode is waves of Deadra beasts and Warriors attacking your group and your group must defeat them while the Deadric Prince are up in there thrones watching with Deadra all in the crowd yelling for blood
then you can add in a VR 10 weapon/armor for the champion of the Deadric Prince reward for a week until someone else wins it like the group that got to the highest wave defeated get a special armor piece like a deadric helmet or chest armor so on of light med or heavy of there choosing then 1 vs 1 highest rank get a dif piece of deadric special gear for the week and 5 vs 5 get the special deadric weapons and 12 vs 12 guild fight for a special buff blessing of a Deadric Prince so everyone in the guild get a 5% exp buff and 2% damage boost and 5% armor& spell resis and 5% more PVP points for the week and the deadric gear is all better then any armor or weapon in game by a slightly amount like 5%-10% better then V10 gear ( also winning 1 vs 1 arena you unlock Deadra race for your account so you can play a Deadra )
also maybe do a special deadra mount for grand championship Arena fight that last for like 5-7hrs where it none stop 1 vs 1 PVP fights till 1 remaining winner is left and it only happins once every month also good rewards like gold with chance of purple and yellow items you get for each round you win
then people who want to watch the fights can watch from a cage on the side of the arenas like the lock up Deadra prisoners and slaves for there enjoyments since they rule the imperial city
just my idea ESO you can do this as a DLC you charde 20-30$ you will make a lot of money win win and keep the players happy and in game
PLZZZ READ IT ALL
im not good at spelling or writing so bare with me I got good ideas
ESO you can use my ideas and email me I can get more into detail and you can make it and make the moneys and me enjoy the game