Layering will not even be a thing long before phase 2 starts. I suspect by the time most the population even gets to Stranglethorn, most layering will be gone.
Based on the OP's post, they obviously do not understand what layering is.
- - - Updated - - -
I think where you fail in your logic, is that you're equating "layer jumping" with how people used to realm hop in retail. And that's not how it's going to work at all.
Players are such morons. During the stress test, someone in General asked to be invited to another layer. I whispered him, how the hell does one do that. He replies, "just invite me to a group". I'm like, lol. OK. I did. He says in /party: "Nothing happened. I'm still in the same layer." I ran over to him, and there is he is. In my layer the whole time.
It's not going to be as easy as seeing a list of users from other servers in a LFG list and joining their group. What the player did in my example above, was just drop group, and kept spamming /1 looking for people to party with him, in the hopes he would get another layer.