I'm all for more playbooks, but I think it would have to be an organized effort to keep consitency. Without the consistency, I think our intentions would be great, but the product might be lacking.
For example, here are some common variable that I use:
WR Line-ups:
5WR: R2 R3 OL-MEN R5 R4 R1
4WR: R2 R3 OL-MEN R4 R1
3WR, 1TE: R2 R3 OL-MEN TE1 R1
2WR, 2TE: R2 TE2 OL-MEN TE1 R1
2WR, 1TE: R2 OL-MEN TE1 R1
2TE, 1WR: TE2 OL-MEN TE1 R1
*This is why it matters:

Zone and Cover 3 &4 defenses. In order for the defense to disguise it's intentions to play zone, the defenders have to line-up on each WR. If I had a defender lines-up on R1, but played a zone on the other side of the field, then that creates some serious issues. Thus, the DB to the far right (your far right), would always line-up against R1.
This of course effects what defense plays can be used against what type of offensive formation. If I have a play where my DBs are lined-up on R2, TE2, TE1, and R1, I can't play that against a 2WR, 1TE offensive formation. That's why you see multiple variations of the same formation in my playbooks.
Some might ask, why not use "line-up" "closest." Here is why. If you place R2 (to the far left), at zoom 3, but your defense is placed to the far left in zoom 2, the defender may leave R2 open.
Those are just some examples. I'll start a thread on the variable that I am using on the PDS thread area. Maybe that will help me, and others with consistency.
Thanks for listening to my ramblings!