Dragon Sorceress Zyra is a bit... Zerg
I think a large amount of it is the squishy wet noises the special effects make. The egg (seed) spawn sounds almost like it's identical to the egg spawning that Infestors make in SC2. The other aspect of course is the choice of Zerg purple, which just adds to the impression.
I don't know if it was intentional or not, although if it was, it seems to me that the Void has more analog to the Zerg than dragons do.
I guess I expected it to be what... more scaly? More dry and hissy? Certainly less wet and rubbery.
It's a nifty looking skin, but the overall effect just doesn't come off as "dragon," to me.