Maybe it's time to "dumb down" the defense a little bit instead of making it so complex. The elite athletes that come into the program are only staying around for 3 years and it takes them too long to pick it up. Having a super complex defense that's hard for qbs and OC to read is great, but what good is it if your players are lost and can't grasp where they should be? When your players are always out of position, it doesn't matter if you have the right defense called or not. Why not make it a tad bit easier for players to grasp and then let your athletes go make plays.
I DO feel like our tackling this year is the worst that I've seen in the Saban Era and that part of the defense has to be fixed first!!