This is actually quiet interesting and disconcerting: http://www.keenandgraev.com/2013/03/20/ruin-3-faction-mmo-pvp
While we do not know much about the campaign system I do think that the issues pointed out in the blog post are relevant. Except
what was said concerning meating DC players in the post 50 version of DC provinces as an AD player, since there was a video interview
that said that AD players in Hammerfell for instance would only be ableto see other AD players.
So a quick round up on them:

The several campaigns of Cyrodiil running simultaniously will basically result in that 'There’s no true sense of permanence when you duplicate a zone to accommodate people, even if you call them “permanent instances,” even if they are technically open all the time, if these regions are generated to address population then they’re breaking up'.

I fear even the focus on AvA will out to turn into a sour experience for most PVPer's since there is no real point in earning Cyrodiil. Unless they make campaigns really rigid and then the question why market the MegaServer as only ONE server instead of many rises up, because that is essentially not true (as far as AvA is concerned).

Your thoughts?

I can see over the course of the first three months the campaigns being completely hectic. People will be switching campaigns left and right, trying to make their campaign stand out or "rank," individuals coming and going. We really won't be able to judge how good the system is going to be until a couple months in when the population stabilizes and everyone has figured out where they have to be and what they have to do. THEN we will see how innovative this turns out to be.

I really hope ZOS doesn't freak out at launch and the following month, altering their system through knee-jerk reactions because of players flipping a shiet. Most of those players are transient anyway and won't stay regardless of the changes ZOS makes. Only time will tell I guess.