I think it is fairly obvious that the offensive line play wasn't as good and injuries had a role. On the defensive side the linebacker play was not that good in the last 1/3 of the season with numerous injuries being the main factor, Having great safeties and defensive line somewhat hid the deficiences of linebacker play. That being said the coaches need to adapt to the problems that the injuries are creating. Your offensive line is banged up so the pass protection isn't going to be as good and you are not going to run as efficiently. We have a bevy of talent at the receiver position this year. Flank 3,4, and 5 receivers with much quicker routes, a lot more rollouts to buy more time. Unforunately the pass offense is set off the running game and if that isn't going as well the passing game isn't as efficient and is the main reason why Iowa looks so bad in the two minute offense.
Yes, adjustments CAN be made, but think a little deeper.
First, if you now have 3rd-string OLs in the mix, how is changing the scheme going to help? Flanking more receivers and changing the routes and timing doesn't just change it for the QB and receivers, it changes it for EVERYone. You don't give practice reps to 2nd-/3rd-/4th-string personnel and then CHANGE things should they be needed.
Ditto on the D side. When you start losing LBs--and we had already graduated two starters from a year ago--bringing in younger/less-experienced personnel is already a change. Losing MORE LBs only adds to the problem. And it is just about the WORST to suddenly change schemes, formations, etc.
So many people say, "Look what we did in 2004!". However, RB was really the only affected area. The blocking schemes didn't change, formations didn't change, etc., although Tate did take more snaps from the shotgun than most IOWA QBs I can remember.
Other people say, "What about DJK or McNutt or Chaney in the Wildcat?!" Great, on paper. And if we're predictable NOW, how well we fool ANY semi-competent D or staff when one of those guys lines up that way? Unless, of course, we go to a scheme that features the Wildcat.
Which, of course, leads to...personnel. Aside from the 3 I mentioned above, just how many "Wildcat" guys have you seen on this team since Hayden and KF have coached?