As an OOC note, I meant to imply that an order like "evolve wings" is fine when I said IC, "Perhaps in reaction to some sort of selection pressure or with a conscious effort, the Hivemind could change these characteristics."
Lol thanks, it's actually the artwork for an obscure Hearthstone card.
Basically what Gentleman said; I'm trying to preserve at least some element of realism (so no mind control or telepathic powers), but if there's some way to use a bunch of scientific jargon to explain away an ability (like maybe hallucinogenic venom that makes a creature receptive to commands, instead of outright mind control) then it might slide. No harm in trying, though. Your suggestion might get taken and just get toned down a bit if I think it's too far out there.