Yeah, not sure about the amulet removal, but I think that the mothership nerf was expected, Archon Toilet was pretty imbalanced.
I'm not sure why they insist on nerfing zerg though, I mean they increased Fungal Growth dmg vs armored, but making it a missile (depending on the speed I suppose) and making its duration shorter will be a bit rediculous i think. We'll see what they do, they made a bunch of changes after they got feedback and testing from 1.2 when they were making fungal growth not work on air lol...
The problem is with that amulet not giving us +25 right away , that sometimes just keeps us alive ... im not to happy with that now we have to go colossi to templar and make sure we have colossi.. really making it hard to go a different way, thanks blizzard
There should be a halfway point with amulet removed - Starting with 50 energy hurts a lot. 75 is too much as it is an instant psi storm but 63 or 65 is a good compromise. I wouldn't use 150 gas now if i can't yield the gains for another half a minute, with a chance of getting all my energey EMP'ed =/