I like your drawings! I think there are some good ideas there for new mounts, Anet should look at them. The Moa is great, and I can totally see it trying to get airborne, frantically flapping its wings......and then fall down again. Only problem is that Moa's while moving, do not hop, but run. So they could not really use the Springer base model I think. But good stuff. As for the expac, I am sure we will see new Mount skins, the Celestial Dragon could very well be one of them. Totally new Mounts with different abilities, not so much. Maybe a Tunneler, that can truly go stealth, but very slow. Limited usefulness though.