I really like your post, but again--I am not sure if there's a totally clear cut answer here. I think that Deus said it best when he explained the combination of variables that go into the thinking.
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I do not truly 100% agree with your assessment on the Solder pick, as you state that the future of Matt Light was in doubt? Was it? Do we know that for a fact?
Thanks for your comments and I agree with many of your statements.
Nate's size and athleticism are rare. Its not often a 6-8 300 lbs tackle is available in the draft. His size may be considered a mismatch to many in the league, when he is coached up to play at the pro level. Solder was to incubate, learn from the current o-line and compete for a starting job. In time, BB knew Nate's size and athleticism would win him a starting roll. I think Nate made the jump quite early, and became an impact player because of his attributes. Nate the manimal became a run blocker and was put in the game where ever BB could fit him in.
When a player in the draft has the characteristics of the ideal, or dream player, its tough to not make the pick. Mallet is 6-6, Hoyer is 6-2. Mallet is the clear winner as an ideal QB.
Lots go into the draft, there are many variables, but I think BB loves ideal or dream player attributes. BB can coach players up if they are smart enough to learn. A player with the ideal form will have a bigger impact relative to other players in the league who lack the ideal attributes. Again BB likes to draft smart kids, Nate was smart, and fit BB's ideal form. In time Nate may be a better player than Light. (I hope I don't eat those words.)
LeBron James is a monster Forward, Nate is a monster tackle. James needed coaching, Nate is getting coached up, and has had a big impact in NE.