I doubt they will be nerfing any other professions soon. And really, JC deserved to be nerfed and here is why (I'll base my argument on the benefits casters get):
Enchanting: 38 spellpower increase;
Inscription: 37 spellpower increase;
Alchemy: 37 spellpower increase;
Blacksmithing: 38 spellpower increase;
Leatherworking: 37 spellpower increase;
Jewelcrafting (as of 3.2): 39 spellpower increase;
As you can see, all these professions give a similar buff. However, they way the Dragon's Eyes worked, a jewelcrafter could get a much bigger bonus.
We all know that blue socket gems are weaker than yellow/red socket gems and they can't be avoided because we need atleast 2 for the Chaotic Skyflare Diamond to work.
Casters would need to use 2 Purified/Glowing Twilight Opals to trigger it. This is already a 20 spellpower loss for not using Runed Scarlet Rubies in those sockets.
A jewelcrafter, on the other hand, could put Runed Dragon's Eyes in the blue sockets and recieve not only the meta requirement, but also a 69 (!) spellpower increase (this is assuming the caster puts 3 blue socket gems which most casters won't do) or a 59 spellpower increase over a 2xblue gem/1x red gem combination.