I do think that there is a difference between value and mocks. You analysis has been consistent.
With regard to your direct points below,
1) Heyward-Bey is rated better than Nicks or Britt by some. I think that on average, most consider Heyward-Bey in the bottom fo the first. Many do not have Britt in the first.
2) Loadholt has been moving up very fast in the last week or so. A couple of teams must like him. In any case, there is no way that Levitre is rated higher than him, or will be drafted before him. I think the same for Meredith. Beatty is our binky. I do agree with our board that he should be higher than Loadholt, but I wouldn't be betting any money that he will be drafted before Loadholt. Luigs and Canfield are rated higher by us than by others.
3) Gilbert has been rated as a third round talent at DE by several evaluators. that does NOT translate into being drafted in theird round. Most have being drafted in the 50's. There are not many 3-4 DE's in this draft, so he will be drafted higher than his value. This is much the same situation as quarterbacks. One article had the guts to post his results of speaking to scouts. NONE of the quarterbacks are top 10 (or probablt even first round) talents. They will be drafted in the first because there is such a need for quartebacks.
The Anointed One has been called a 2nd round talent at TE and a 3rd round talent at DE/OLB. The patriots send a TE coach to evaluate him, even though he did not play TE last year. Where do teams usually draft such conversion projects? Most have him in the second. Some promote him into the high second or even the low first because of flexibility. I wouldn't consider him until the mid-fifties.
Sean Smith is another project without a position. He is not good enough to be a top value at corner in a terrible field of corners. What is a swing DB worth? More than a third? Why? Is Smith worth more as a safety than any of the top six safeties? Why? I would rather have one of the safeties if I need a starter at free safety.
4) I agree that Raji is in the top group and that jenkins is dropping. But again, you are talking about mocks not value. I agree with the writer that Jenkins is a very valuable commodity. Ayers and Maybin will be drafted more highly that we rate them as 43 DE's, perhaps before 16.
We've discussed English several times. There are a few who consider him a first rounder. Most have him valued in the 40's.