In Woody's defense,
1) he runs with a very low center of gravity so he usually can get a couple of extra yards after first contact,
2) he has been sure-handed in the catch, and
3) he has been good with ball protection.
If you put all of those assets into a faster guy, I am all for using him. Our faster guys apparently aren't as proficient in those areas or we would see them more.
Among the list of team issues, using a faster kick returner is pretty far down the list. Blocking for him a bit better would be higher on the list for sure, but after several much more pressing issues such as depth/health at SS, FS, both CB spots, slot corner, ILB, OLB, OT, C...