You've built a lot of subtle changes into the characters, but it was EXTREMELY gratifying to SEE the results. For Clint and Natka, it's a slower, more stable development. Satisfying, but not as surprising/rewarding as the changes in both Bruce and Tony.

Tony reached out to Bruce, and Bruce accepted. That's major, for different reasons. Tony found a way to reach Bruce at his CURRENT level, not just Bruce-the-Genius-Twin. Wow.

Bruce, ever so cautiously, moved far from his safe place, physically and emotionally...

Finally, Uncle Phil has them ALL together, and is turning a hopeful eye toward Steve.

WONDERFUL.