Theres no one working on Cyrodiil improvements, I wouldn't get your hopes up. Theres a lot of stuff that should have been added but ZOS likes to pretend the zone doesn't exist
This is actually a really good idea. However, adding these shrines to the campaigns would then mean that ZoS doesn't get to enjoy the screams of frustration as loading screens to exit the zone crash players.
Seriously though, make this a thing