I said it somewhere and say it again:" I would like to see PvP without mystical items and without proccsets."
To make a big change here they just need to implement much overpowered PvP sets like a perfect imperial physic without holding 10k tel'car stones to get the buff (but also stronger) and this buff you just get in PvP!
Also implementing monster sets only for PvP while all proccs disabled in PvP would change a lot and could bring back good old PvP. After that classes could be rebalanced without looking to "which proccset will be too op on single class, let us nerf the class..."
It also could end a lot of lag issues in cyrodiil.. i remember a time where 200vs200vs200 had less lags...
DeHei - EP Magicka Templar Allrounder
De Hei(Youtube)