I saw it Saturday in "4-D" and loved it!!
I liked the "she's not alone" shot - a little contrived, but still very cool.
I was sad about both Tony
and Natasha, but probably him more because of leaving behind his little girl. I kind of knew she had to be the trade for the stone.
I think they used the "loop" model of time travel:
(The loop should sort of overlap more, but it's easier to write in this way.)
DH and DS thought the shield should have gone to Buckey, but I think the writers had their reasons, and I'm fine seeing where they take the story.
They also didn't like the "Professor Hulk" character, but the idea is growing on me.
I’m kinda sad for Quill that’s he got to try and make her fall in love with him all over again.
Eh, I think he'll kind of enjoy the chase - sort of like getting a chance to one-up his own success the first time.
No additional scenes after the credits, just the sound of a hammer striking metal, presumably the sound of the Iron Man armor being made. I left before this too as I had heard there was nothing.
DH was very disappointed that we waited all that time for only a sound!
My first thought was Loki making something new to hold the tesseract.
I do like the idea of Morgan Stark making her own suit, though!