stone trolls down to vanilla and drop the command from the spiders for the nets?
Also consider changing the ng warboss to a vanilla goblin warboss. +1ld can be huge.
I just noticed the 2x part of the ng spears. I'd consider merging them into one huge unit. It saves you points on command so you can snag a ward or something for the shaman and an 80 strong unit is tough to deal with at low points values.