Well, I personally have several friends who play on the same realm/faction as me.
In addition to that, I have a lot of in-game friends, many who were in EQ1 with me 10+ years ago.

I have no objection to a Goblin or Worgen team, but will only roll on Cenarius.
Most of my toons are Alliance and I prefre Worgen to Goblins.
I don't really see the point in doing a server transfer to move gold to a new realm.

I'd imagine most of us in a similar boat.
While the idea of 20 or so boxers together is neat...
Most have resources, friends, roots etc to their current server.