This trailer got me going:
Thanos - He looks weird without his armor. Was expecting the studios to stay true to what he looked like as in the cartoons Avengers Assemble but this is just weird. I'll grow used to it though.
Guessing that based off the trailer this movie will have Thanos get two Infinity Stones(Mind and Aether) and the next Avengers movie will have him get the rest. IDK.
And shout out to Captain America becoming Nomad!