@Caigan I just got nether iridium ore from a blind bag, but it turns out there's nothing I can do with it (that NEI will tell me, at least), and it seems that the only way to craft iridium is with iridium essence. Is it intended for nether iridium ore to be a blind bag reward and/or useless? (Honestly, I'm suspecting an NEI derp on my end, and I'll update on that when I get around to reloading the client)
Just got around to reloading the client, no change.
Also, with all the customization options, I'm surprised ZTones isn't in this pack. That said, I'm aware that there's a few functional items, too, but I don't know ZTones well enough to know what they are/do.
Also also, I've not been getting the tinged leaves from Arisaurs from Lycanite's Forest Mobs. Granted, I don't kill them super often, but I feel like I should have gotten at least one by now. Also, and this might also just be bad RNG, but downy feathers also seem to be in short supply. (EDIT: After a bit of chicken murdering, I've gotten enough to fill the contract for 'em.) I've gotten one so far, and that was from a Uvaraptor, and I kill those a bit more often than the Arisaurs. It might help to say that the Arisaurs drop shimmering scales, which I can't say whether it's intended or not. The Lycanite's description more or less says that Arisaurs are made of plants, but I don't really know which drop you wanted them to have (or if it's both).
EDIT: A bit more creature hunting later, and an Ent just dropped a tinged leaf, so that's definitely solved. (Previous bit edited to reflect this.)
While I'm thinking about it, are Ghasts the only source of wriggling tentacles? Because they have fairly low spawns and tend to drop their loot over lava or smoldering dirt or other things that kill their loot, which makes hunting them for the tentacles suboptimal.