We ran a handful of run plays, but would run those handful out of a dozen different formations, giving it a different look each time, but the principles stayed the same.
Once you install the passing tree, the OC can tag routes that he feels can exploit a certain defense. We ran a handful of 3 step drop plays (60 series), and a handful of 5 step drop plays (70 series), all of which can come from a dozen of formations. For instance, if you have a zone linebacker carrying a TE on a seam, you may tag the Z receiver on a slant. The play may have been “Trey right, 70 pass divide”, and to tag the route it becomes “Trey right, 70 pass divide, Z slant”.
You can create hundreds of combinations out of this, but it’s based on a handful of plays, coming from a handful of formations, with the ability to tag a handful of routes.