They are already establishing the Aetherial network in Idylshire. I doubt that will be spread out to the Hinterlands because A) there would be game mechanic reasons for not doing it and B) from a lore perspective the majority of the Hinterlands is not secured territory and both protecting the network and insuring it wasn't used as a back door into Idylshire for nefarious purposes would difficult.

I suspect we will see a lot of repairs in 3.3 though. In just 2 patches the area has had massive repairs.