To give my thoughts:
The beginning of the teaser was at least something in vein of old Disney. It kinda reminded me of the animation of the vase figures on
Hercules and the hand drawn segments on
Kung Fu Panda. For all the remarks of Disney not wanting to do hand drawn animation anymore, it's good that they've found a way to snuck it in.
Either way, it's obvious that Maui will be the scene-stealing character, but perhaps he'll risk to be too obnoxious. And he's obviously able to turn himself to a different creature.
Otherwise great animation. Moana is better designed and animated than both Rapunzel and the Frozen sisters. She looks like a CGI version of a Mark Hehn drawing. The setting is quite reminiscent of what you usually assume of a tribal Polynesian setting. More than
Lilo & Stitch, though it risks to be compared too much to it.
Interesting that this movie will have a Moses reference

. The water parting as they walk on it.
I detested the last shot with the rooster. I hoped we could hear more of the songs than just the one that was already leaked. But I liked this teaser better than the
Frozen teaser.
Despite the mediocricy of the
Tangled teaser, at least it had some clips from the movie, while the one of
Frozen was in the same vein as the Pixar teasers.