Originally posted by Dub J
Let's see...
A play that before had backs just blocking but now has them running routes...
I wonder if I don't do anything to my plays what will happen. 
So you are going to make new plays that will only cover the routes that where added/changed, then just run those plays and hope the offense does not use the plays that where left un-altered that your plays where designed against already?
Seriously , stop being so dense. I mean I seahorn is agreeing with you then you know you're being dumb.
In no way is this either a lot of new "work" for a DC in comparison to adding new formations AND new plays.