I don't fully disagree with your list to be honest, but I think we don't really need a corner and it's a position that is getting marginalized more and more as the years past with rule changes. If the team feels they need another corner, draft a 3rd rounder and just add to our core of DRC, Toler, and Mike Adams. Adams played well enough last season IMO to be in the picture for the nickel job, but it wouldn't hurt to bring in another young guy to compete for his job.
I like Newton quite a bit, but he has his own huge risk as well. Obviously he hasn't played in a conventional offense, and I think the guy is a primma donna, based on his actions at Florida, his 12 traffic tickets the past 2 years, and the play for pay scheme his father was involved in. I seriously doubt he had no knowledge it was going on. I think he's a fantastic prospect, but I just can't shake the thought that the kid is a piece of crap.
Quinn of course has 1 good season and was suspended for a year, but what he showed that season was that he can be a dominate front seven player, which IMO is one of the major components of success in the NFL right now. Teams that lack playmakers upfront are losing teams, and I think the Cardinals need to not only just a top pick on a front seven player (Quinn or Houston preferably), but we need to bring in someone like Kamerion Wimbley as well. A OLB corps of Wimbley, Schofield, Davis/Porter, and Robert Quinn looks really good on paper. Davis could move inside to the SILB position to help fortify that spot.
Miller will get some pass rush going, but I think he's going to be king garbage sack and that he's not going to fare too well in the run game. IMO he's kind of a what you see is what you get kind of prospect and I don't imagine that he'll ever be as good as his press clippings. We've all seen players like that, guys that go to Pro Bowls but people who actually watch them play know they put up numbers, but aren't really that good. That's how I view Miller, he'll have 10 sacks, but teams will average 5 yards a carry to his side of the field.
If we're really looking at BPA (which I don't advocate and teams don't really draft BPA) AJ Green might be that guy. He's going to be pretty good, but I doubt he'll ever approach the Fitz-Andre Johnson level. The guy that will is coming out next season, Alshon Jeffery from South Carolina.