I don't see these as all the same issues. They stem from different issues IMHO. Here is what I mean.
The ZBS was part of an overall WCO scheme brought in by the new coaching staff that basically changed almost every scheme we were using under Parcells/Sparano. That was. Drastic change and that much personnel could not effectively be changed out in one season, so there were transitional issues as we did it over multiple years.
We moved Dallas Thomas around because of 3 different things: 1, he was drafted for his versatility as someone who they thought could play both OG and OT ... They were wrong about OT. 2, We had needs dictating that we look for an upgrade during the season so they gave Dallas Thomas a chance to impress them ... and he failed miserably each time. 3, He was atrocious last year, so after they determined that he was so bad he couldn't even beat out Jonathan Martin at LT, they tried him at other positions and he stunk up the joint at each one.
Charles Clay isn't really a traditional TE, he is an undersized raw athlete who does best with extremely simple roles. He played sort of an H-Back/WR role for us last year, but when we asked him to block he struggled mightily. When we asked him to do more complex receiving assignments he struggled. The one thing he did well was run at an angle fast past LB's on the simplest routes. IF we get him the ball in space he is a beast, but he has zero polish and flexibility in that role. He will never be a complete TE.
Odrick was drafted to be a 34 DE by the Parcells crew. He can play that role and did a decent job, but that role is similar to a 43 DT role. So, when we went from a 34 to a 43 he was the 3rd guy rotating behind Soliai as the NT type DT, and behind the best years of Starks as the gap penetrator type DT. At his size he could fill in for both as well as play strong side DE. We didnt have anyone else to play strong side DE so Odrick performed both roles as a bit of a tweener, since that is what we needes. Now that OV has emerged, Odrick is free to play as a gap penetrator DT and specialize, which has helped him excel.
Wheeler doesn't have the power to be stout at the point of attack, but he has excellent pursuit so we made him a blitzing WOLB. He was effective at producing pressure. Unfortunately, his coverage was abysmal and teams knew he want stout so they also ran towards him. Not sure how to fix that one, but I doubt it is by moving him to SOLB.
In Coyle ' system we ask our safeties to do both roles as a hybrid SS/FS. Jones had a down year, but I'm not sure it was because of a different role.
Jordan, to me, always screamed 34 OLB. Coming in with an injury really marginalized his steep learning curve development. He was super thin for DE and easily moved in run defense. He is an excellent athlete, but he simply doesn't possess the freakish raw strength that Jason Taylor possessed, so he is going to have to add bulk and power as well as drastically improve his leverage and technique before he becomes dependable on anything but sure pass downs. That takes time.
Some of that is Ireland's fault for sure, but there are a lot of other things going on with these players as well.
Sorry for the long post. That is my $0.02 on it.
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