Originally Posted by jmd1214
#1 cap becoming more comfortable and established as the leader of the team.
#2 I'm curious how stark "is still" iron man. Is it bleeding edge/extremis? If so, show us the development or tinkering for that suit. The tinkering and problem solving in each of his movies has been the most entertaining part.
#3 what has banner been up to? Has he controlled the anger completely? Has there been an incident? If so, what happened?
#4 I know the cast is massive and script will be too but I would love a Pym/Lang Easter egg the gets us more excited for the ant-man movie a couple weeks later.
#5 random: since the avengers, I've been very curious why the NASA banner was hanging in the building in the opening scene. Is there a connection to shield? What is it?
There are countless others as well but this is a start. Seeing a nod to avengers #24 as zarex suggested would be cool too.
There are a couple of reasons for the NASA banner. First, that SHIELD installation was part of Project Pegasus, from the comics. In the film Project Pegasus was conducting research with NASA, so the facility was the Joint Dark Energy Mission/Project Pegasus/NASA etc.
Another reason for the name is that Marvel filmed the underground scenes in a NASA facility in Ohio. Marvel made a deal to pay to uses the facility and threw in some NASA branding as a nice bit of PR for the space agency. That huge chamber where Loki first appeared is actually a massive vacuum chamber NASA uses for experiments. They also rent it out for films crews and parties.