I was thinking earlier about offensive line and why guys like Onwenu and Chasen Hines fall in drafts. These days so many teams are using wide zone or at least run a mixed zone scheme and work in wide zone that guards who ooze power like Onwenu and Chasen fall. Onwenu and Chasen weren't known for their lateral agility. Onwenu and Chasen were fits for guys who run a lot of duo or gap/power. So for like 5-8 teams they are looking at different types of OGs than the rest of the league. The Patriots have typically gone with athletic versatile guards for their LG, athletic LTs, centers who are also smaller/more-athletic, and then traditionally have had better run blockers and more powerful guys on the right side of their line.
Hines to me is a backup with the chance of being a starter in a gap/power or duo scheme (RG for the Pats). He can also play center. If you look at Lance Z's grade for Chasen he's in the early day 3 range but his projected draft spot is the 6th round. Why? Because the supply is greater than the demand for guards like Chasen. So for teams like the Patriots I think they might have better marginal luck developing later round OL than other teams because they guys they want for their system are better quality prospects by round 4-5-6-7.
This is also the problem with generalized big boards. A guy like Chasen Hines will be off teams boards who run primarily zone stuff but for teams who run gap/power would be a day 3 kind of evaluation. If you run a generalized board and are trying to figure out the overall draft order vs figuring out what guys can do for different schemes your board imo is not helpful after rounds 1-2 when the more high-talent scheme-diverse guys go. Generalized big boards just don't move the needle for me when discussing guys who would be very good in certain schemes but not for others.