Wasn't the teaser for AoU released almost 2 years before the movie release? I think a year and a half for BvS trailer isn't that bad.
Yeah, with what I've seen is more than enough, and they should not show anything else, but it's hard to not geek out about this.
You mean the Iron Man helmet to Ultron head teaser? Not the same as a trailer with film footage. I'll still watch it if it happens, but BvS stuff is premature imo.