https://huddle.gg/23/playbooks/353/formations/12764/
I run Saints offense, but not the meta formation. I find that this empty backfield formation, when used properly, can tear up a lot of defenses... primarily because people can't cover the seams. If y'all want to try this scheme out, I'll put my primary reads/favorite plays out of this formation below:
Saints Clearouts: This one is a pretty simple read. I usually look from my TE on the streak to my WR3 on the angle post route. A lot of times, if my opponent is blitzing, the TE will be wide open for a first down. Even if they are covered on the inside, you can lead the ball to the outside and the TE will likely still catch it. If that doesn't work, I'll assume that there's been enough time for you to move to the second read, meaning that the WR on the angle post should be open across the deep middle of the field. If both are covered, there are two checkdown options (the red deep in route doesn't usually get open) or you can throw the ball away.
Saints Drags: I usually look from the WR3 on the deep shallow out post, since this route usually has the best big play potential. If that isn't developing quick enough, I just look to the short and medium drags for a checkdown.
Saints Seams: This one is simple. Read the seam routes first, then look for a checkdown or throw the ball away. Chances are the seam route on the right side is open, though. People can't seem to cover this sort of route unless they user it themselves.
Saints Slant Flood: This one is my favorite play. If Julian Edelman is 1 on 1 and doesn't get bumped at the line of scrimmage, he's probably going to get open on a lob down the field for a big gain or a touchdown. The exploitation here is that the slot WR (Edelman) ends up matching up against a safety, who he easily burns. If he doesn't get open, again on the right side the TE on the long out route can get open. If you want to read the left side, The WR3 on the corner post can easily get open. If not, then the HB on the delayed deep slant route can beat the CB or safety matched against them (they stop on the delay and can't catch back up), so your opponent has to come back down the field to user that route, leaving the other routes 1 on 1.