I haven't finished Swarm campaign yet, but doesn't he lose one somewhere? If you look at 0:20 - 0:22 you can see the model on the left regrow it, which I think happens during one of his ultis.
Hope this means more SC heroes to come - Tosh would be awesome for starters, maybe as a psionic mage type character, since there are so few mages right now.
Cool Lili/Artanis skins, but I wish they'd spend more time making skins for heroes that people actually play. I love the new Arthas skin they just released but he's a piss poor choice right now, so it's kind of hard to justify the cost, especially since they're so expensive.
Speaking from a development perspective, is there a reason they're so stingy on the skins? It seems like LOL released their skins a lot faster, and from what I remember they made them a lot cheaper (although in fairness they didn't have the color variations, and a lot of the skins actually amounted to not much more than that).