I know you know football and I also understand you're a big draftnik like me and know prospects well... but I don't get how you think King or Budda don't fit Marinelli's scheme?
Marinelli likes corners that like to hit and can tackle well, even at the expense of a little speed. That is King to a tee. The team likes intangibles (requires them actually), and is looking for players who can make plays on the ball and actually get a turnover from time to time. Again, that is King, exactly.
I don't see King as a square peg in a round hole at all. I see a guy that can play outside or inside at CB and has the instincts and awareness to play safety, if that is what the team wants. By me saying take him in round 2 and figure out where he can play, I meant that I'm not sure if the team would want him outside at corner or in the slot or as a safety... but I think they would love to have him at one of those spots. He could play all three and he would be a fit at any of those spots, IMO. Most likely he'd play a little at more than one place, I think.
As for Budda, he is a pure FS and IMO would be a fit in just about anyone's defense. He's very good, tough and makes plays all over. How he doesn't fit our offense, I don't know. Byron Jones would have to get moved back to CB (which he can do and fill a need there) to make room to bring in Baker, but he would walk in as the best safety in Dallas since Woodson.
So, I don't agree that they don't fit the Cowboys defense. I agree that you shouldn't take players that don't fit your team, of course. That would be bad, and frankly, if I don't think they fit, then I wouldn't advocate drafting them.