Couple things: 1.) It was mentioned at BlizzCon that they're aware of the problem and it was implied we may see more connected realms. And 2.) You can now essentially pay for a server transfer with in-game services via the WoW token so if you're not moving yourself off of your own dead server you have nobody to blame but yourself. This is not a Blizzard issue, it's a player issue.
That said, I've always been fond of the idea of allowing players who stay continuously subscribed to have a free server transfer with every 12-plus months of subscription. Either that or a one-time-use significant coupon code, or something to the effect.