I don't know about that. It'll be hard to top those two great movies. Especially the first one. I heard they were filming in China for some of it, so I'm expecting to see The Mandarin.
To be honest, stuff I would like to see: Enchantress and The Executioner, Loki turn Thor into a frog (lol), Beta Ray Bill, or whatever they decide to do.
I'd wanna see Winter Soldier (Maybe not reveal he's Bucky, until Avengers 2), I want him to go and see that girl (the one he made the date with, I forgot her name), and Baron Zemo would be cool. And I wonder if it's possible for the Red Skull to come back.
I think I'm most excited to see Thor. I Just think Hemsworth has nailed that character, and find him intriguing on screen. His story and world are also the most fascinating to me. Asgard looked really amazing in Thor, and I really want them to explore it more.
With that said, I can't wait for the other movies either. I think they can really do a lot of great stuff with Cap, and make his movies more serious (dramatic/action/spy thriller type) that the others.
If they do go the Extremis route with Ironman that could be something special. It's going to be great seeing RDJ react to the armor being a part of him...LMAO.