I disagree completely. I'd say they've got most of them right(Killian/Mandarin and Malekith not withstanding). The thing is with MCU films the villain is usually not allowed to outshine the hero. Loki is the only one who comes closest to doing that. And I prefer it that way. Much better IMO than the way most other studios do it by having the villain carry the film/steal the scenes because the hero(s) aren't as interesting as they should be. At the end of the day, it's the hero(s) I came to see more than just a new villain. They're the one's who's name is in the title. That's probably why I prefer most MCU villains to any other comic book super-villains in film. They do their job within the story rather than trying to bust out and hog the movie to it's detriment.
I agree with you to a point. But some villains need to be iconic. One guy said abomination I guess that true. I mean abomination doesnt have a tone of depth and they pretty much made him what he was. The iron man villains with the exception of sam rockwell as hammer were all not so great. And I agree about Killian. But really Iron man villains are not all that great anyway. Now when i say some villains need to be Iconic I am picking out the Red Skull. He is a great bad guy and came across in CA as just a generic bad guy. He is Caps greatest enemy and one of marvels greatest bad guys. In my opinion he should and could have been much more. So that is easily my biggest disappointment. Now that is not to say it cant be corrected so we will see.