As a Ranger and a Jeweler, I don't like this change at all. It hurts both ways. I knew it was coming because I do read the test updates when they get posted (which isn't very often). But from previous experience, when something goes to test it usually goes live unless it's broke.
[phone rang and I lost my train of thought]
I can't remember what point I was trying to make, but lets say the only reason I craft is to equip myself and help equip my guild. I really don't have any interest in it. I don't find it fun, nor is it profitable. This change made it more of a chore for me than before, but I'll still continue to keep it up because there are a lot of peaks and valleys in crafting. And, this problem with the loams should work itself out before too long. Until then, I imagine App IV stuff will be in demand. There just isn't a lot of T7 AD1 stuff on the brokers these days.