Okay here's a really important suggestion that should be super easy, and rly I'm surprised no one has mentioned this(unless they have already, but im pretty sure I have not seen it...)
Right now, the playbooks can be a little difficult to navigate through, esp if you are trying to play an uptempo game. A great way to remedy this is to allow us to move plays around as we like as far as order in a playbook! This would help immensely as right now, we are stuck looking at the plays only in the order you add them. Sure you could technically delete plays, then re-add them in the order you want, but this is quite tedious. I would much prefer and think it would be much easierr to be able to add all you want, then go back and group them in an organization that makes sense to you - maybe you want to order by short, medium, long, etc etc. Does this make sense and appear desirable to others? Or are you just thinking "why can't he just add them in the right order?" I figure it would be an easy thing to add in. I find creating playbooks very, very dull and tedious, but obvs they are of the highest order of importance