Quarter Man Base has the potential to be a very good 3WR passing defense, but it is broken.
http://glb2.warriorgeneral.com/game/replay/200205/1684333 - CB4 Drops into a zone against Trips formation. Basically takes himself out of the play.
http://glb2.warriorgeneral.com/game/replay/200205/1683832 - Against Singleback we have guys in zones too. I thought the play was called man base?
If this play had the following assignments, it would be pretty good:
CB1 -> WR1
CB2 -> WR2
CB3 -> WR3
FS -> WR3
CB4 -> TE
SS -> TE
CB5 -> HB
Then we have Dime 3-2-6 Man Base
http://glb2.warriorgeneral.com/game/replay/207567/1278863 - Against Singleback we have the MLB in a zone.
Also we have CB4 lining up differently for no reason:
http://glb2.warriorgeneral.com/game/forum/thread/5239402Nickel 3-3-5 Man Base is a very popular play against 3WR passing, but plays like 3-2-6 and Quarter Man Base should theoretically be even better if you know a team is going to throw the ball and if they were designed correctly.
Fixing some of the existing plays would be a great solution towards slowing down the teams that all use the same 3WR passing plays.