When you are making formation substitutions it is important to know plays in your gameplan come out of that fomation.

E. G. If you are subbing in a recieving scat back who is poor at passblocking you should check that your gameplan is set up to send him out on routes, not stay in too block.

I pull up two tabs: 1 of my offensive playbook; the other of the formations. Then I meticulously go through the plays and the over-rides.

Like Smirt211 says.

But I think this is a great idea.
To be able to see all the plays involved in the formation and even have em linked so we can pull up the sticky notes of those plays would be pretty kool.