My rebuttals below:
1. Vision is supposed to be OP. He has a freaking infinity gem in his head, how could he not be?
2. By ratifying the accords, Vision already subordinated himself to government control. Your point is thus moot.
3. Zemo explicitly stated that he studied the HYDRA/SHIELD files leaked by Natasha. Plus he was introduced as a veteran from the Sokovian military, so he could have had the expertise to execute whatever he did.
4. Look me in my eyes and tell me you won't try to murder the man who killed your parents.
5. Gee, I guess that makes more sense than having Lex unwittingly create an abomination with his blood
But really, as a casual fan I can tolerate some compromises to the script. Heck it's sure eons better than the
other movie.
6. Tony created his first Iron Man suit in a handful of hours. How hard would that be when he owns a damn technology company and has a supercomputer at his disposal? Heck, he even synthesised a new element in less than a day.
7. Some friendships are just mature like that.
That movie, on the other hand. Plus their conversations can take place off-screen, stop nitpicking.
8. You not being able to stand Vision is not a legitimate reason to kill off a character barely one movie after he was introduced. High stakes don't warrant casualties. Rhodey having to live with his physical handicap for the rest of his life is, IMO, more painful than a cop-out death.
9. Dude, he was up against Captain America, a proven melee specialist. Plus that was a confined space with nary an inch for his suit to maneuver. Quit nitpicking.