Don't get me wrong I love the current Cyrodiil, I love the landscapes, the architecture, the quests, the people, the Blue map etc etc but PVPers need something new.
What we need is a new campaign which is in fact a new map, and in order to keep things consistent and avoid lore breaking hissy fits the new map should include an element of time travel.. in that way it could contain completely different features.
I know you make less money from PVPers than PVEers but there is a solution to this, where there is a will, there is a way, as they say.
You are already charging many crowns for new motifs, so in order to pay for the new map it should require the need to buy/craft/steal (or purchase with crowns) new weapons armour, even mounts.. this is why the time travel element is essential.
Basically your current gear cannot be used within the new time zone, it will not be as effective, so you will need to get new gear, subscribers will be given a first tier of new gear for free etc etc
I hope you consider this and show some love for PVP, you could even put the new map on a different server which could solve some of the performance issues..

All the best..
Moonio
Just a poor healer from Glenumbra..