Interesting if it will be completely random or ESO will have some preferences on assigning players to campaign.

Initially it will be random, but after 3 months when all campaigns ends there will be a lot if data available:

- players/guilds who prefer to PvP

- players who never entered PvP or almost never played PvP

- players with no guild

- mega guilds (zerg)

We could have for example zerg vs zerg - to group PvP players with big guilds, the other could be random.

We could have emperors guilds vs emperor guilds choice.

We could estimate how many players will attend PvP to not overcrowd PvP area.

May be other thoughts?

When campaigns "end" only the leaderboard is reset. Nothing else changes.

I think that a lot of data can be collected and stored on Bethesda servers. One of it could be PvP time - how many time player was active in PvP area, number of kills etc.

Do you mean that you are assigned the same enemy and must be in same set of guilds for ever?

After all I know there will be camapaigns that require you to have a certain RvR-Rank.

So "randoms" and people not really interrested in PvP will end up in low-rank campaigns while hardcoe-guilds try and get to the highest-rank campaigns as fast as possible.

Maybe there'll be more requirements like guild size and stuff, we'll see.