Created playbooks are hard to get into the game because in play now you have to set the playbooks and you’re not letting it go with the controller in the middle. When controller isn’t in the middle the game doesnt play the same in play now. Capa’s had lots of problems with this.
In cfm, the problem is you can only assign the default team specific books this year, not the generics. And you can only assign one team a custom book. For me it’s just easier to adapt those players to current schemes. Really wsn’t a slot we before the 2000s. Halfbacks and fullback usually had those catches. We just have to get those touches to another player. In the old pro style offenses with far/near formations, the halfback would motion out as a wr and leave the fullback as the single back. Sometimes the fullback would shift to the wing and the halfback would be the single back. Lots of shifts back in the day.
Nowadays the slot wr doesnt motion from the backfield. Sometime the slot guy is a TE and this the old fullback position.
It’s basically the same thing today, except teams start out in the spread formation. Used to, they would shift their normal personel into a spread-type formation, albeit under center. A far/near formation would turn into a 3 wide 1 back set.