The whole point of what SE is doing is to try and balance the DCs; the result of this will see large numbers of people flocking back to Aether in the very attempt to avoid being locked from being able to do content they want to; which returns us back to the very imbalance SE is trying to fix.
I think you're wrong.

There's two major population groups, raiders and RPers. Square-Enix did a good job segregating the communities. Aether for raiding, and Crystal for RP. Obviously, people should choose the data-center that provides the content they prioritize above all else, and then find little nich groups of the other content when it happens. RPers can still raid with pugs, and Raiders can find niche RP clubs on Aether. It's win/win.

Ultimately, no one data-center can support BOTH the Raiding and RP communities, so a split was destined to happen.