It's like the Dark Phoenix. It's like the Celestial Steed. They look good, but they are nothing but cheap copies of truly epic mounts.
That said. Of course I want them. I collect mounts. But I will only use them for a couple of weeks (should I get them) to show people how awesome I am, then go back to a mount that really has charm. I have the Amani War Bear, the Zulian Tiger and the Razzashi Raptor (x2 /giggle) - and they rock! The tiger is the best looking ground mount in game. No new skin can match it, so I guess I am OK with it. I hope the drop rates will be fairly low. The Blue Proto Drake was a dropped mount from a 5 man dungeon in Wrath of the Lich King, and I never felt it was too common (Oh, I have that too). So... Lets see how it goes. See you on the farming field.