I will agree with what you are saying. IMO, the trade up for Fiske last draft was more going for a player they targeted more than a player they may or may not have had a first round grade on.
Also, what I see in the collaboration between Snead and McVay is a balance of targeting players they want based on scheme or philosophy versus players based on the traditional "sticking to your Board rankings". Seems that Snead lets McVay point them in a certain direction early in the Draft. And, Snead does all he can to accommodate his wish along with giving options if they lose out on given player. And then I see McVay taking a back seat in the mid-rounds to Snead and the scouts. They all talk about who is the best fit, but still McVay tends to leave the decision making to Snead on all the other picks. Again, just my opinion....that's what I get from seeing the post draft coverage of their War room in recent Drafts.