Only Schiano knows what he wants/needs his MLB to do in his defense. If he thinks Hightower fits the mold he is looking for then I'm all for it.
Lavonte David / Dunta' Hightower / Mason Foster......could be pretty sick.
I think the first part is key - We simply don't know how he's going to want to configure things.
I also agree that there's more work to be done on Hightower, since he didn't do some of the speed drills. However, I did like what I saw on some of the other un-timed drills - I was once more skeptical of him, but I think he might actually be able to make it in the 4-3.