The lack of defensive ends
I hope that RR keeps Lloyd's tradition of letting the kids play where they want to during their 1st year. The kids should get an opportunity to prove that they can play at their desired position. To force kids to switch positions as soon as they arrive on campus would be detrimental to future recruiting.
Now, I hope that Moore/Witherspoon are realistic enough to see the opportunity they have to see the field if they make the switch to DE after 1 year, a la Trent at CB a couple years ago.