Would Dr. Doom work better as an ultimate villain in MCU than Thanos or Ultron?

I love me some Doctor Doom, no question.

In terms of the MCU, I think he hits a nice sweet spot, as I discuss above. You can use him in lots of different kind of stories: he could fit just as easily into a Doctor Strange movie as he could into an Avengers movie or an Iron Man movie, whereas Thanos really only works on the cosmic-sci-fi level and Ultron only works vs. Avengers or component parts thereof. 

Likewise, unlike Thanos who’s obsessed with Death or Ultron who’s obsessed with revenge, Doctor Doom has a more varied range of motives, so you can throw him into most any plot: he’s bound to be interested in any macguffin that promises power, he’s always up for an invasion or conquest, and he loves deeply petty personal grudges. 

Indeed, I would argue that Doom works rather well for an MCU that’s expanding: he could fight the Avengers, he could fight Iron Man, he could fight Spiderman, he could fight Ant-Man, and if Marvel ever gets back the FF…fish gotta swim, Doom gotta fight that fool Richards.