Its a bit silly to make predictions at this point, because how good this team can be is going to depend somewhat on the JC recruits we line up. Add a couple top knotch DT's (Tucker/Leath)...a few of whom we seem to have a VERY good shot at...and perhaps a solid Juco LB or two...and the defense takes on an entirely different look. Guys like Cousin, Garcia and Meyer become solid depth guys rather than not quite ready for prime time starters. Harris is going to be good at LB, so adding a couple high level Jucos there puts Knott, Peters, Meeks, Seeley and crew in that "backup" role as well...where they can contribute but not be expected to perform at levels they are incapable of.
Honestly, the secondary looks decent already, especially if we can reel in Jomal Wiltz or Antoine Albert. So the defense has a real chance of being "less bad" with such additions. So before making predictions, it would seem wise to wait and see what we have coming in...because SOME Jucos can make a big impact (see KSU).
Predictions after February's signing day are going to be much more accurate IMHO.