OK Im still trying to understand the logic behind Blizzard doing CRZs. For PvP servers it makes sense as people have been crying that Blizzard killed world PvP for years now and more people in zones means more people to fight. Not on a PvP server so just assuming they work like that. But for PvE servers CRZ makes no sense at all. They removed 99% of every single group quest and all elite mobs other than faction guards years ago so the reason cant be more people for you to group with to do those. The only possible reasoning for CRZs is Blizzard is stress testing the servers to see if they can handle a lot of people in the same zone from different servers and they plan on adding Rift type events that require a lot of people to complete. Before this wouldnt have been possible to do as most zones barely had more than 5 people in them unless they were current expansion zones. But now with CRZ they can add special events and people can form up groups with people from other servers in order to do them.
Blizzard isnt usually dumb and when they add something big like CRZs. I seriously doubt they did it just so people could see random people from other servers that they will never see again. I mean thats what BGs, 5 mans, and Raids are for. Blizzard has gone out of their way to redesign the game so it makes the ride from 1-max level most efficient when done solo as other people just slow you down by taking kills. Just compare exp from doing BGs and dungeons to questing, its not even close unless you are a tank and can perma instant queue and everyone is in full heirlooms so you can clear instances in under 15 mins. So the only logical reason I can come up with is we will eventually have zone wide events that will require people from other servers in order to complete. Maybe complete invasions with multiple objectives or just simple zone bosses like Sha of Anger. But something is coming or they wouldnt have wasted their time to create CRZs. Unless they are just trolling us like they did with Path of the Titans that was supposed to launch with Cata and CRZs arent actually going to be used for anything at all.