Great idea! But wrong application. Reason 1, you'd have to have an exceptional line, not just to read, but to have the ability to play something off the cuff together and correctly. Reason 2, you will be limited to just a few for the game and your instructor will have to have a vast imagination to write a battery score in that short amount of time. Reason 3, what about the songs the band plays, you will be distracting to what the BD is trying to do in the stands. You would have to use a limited number of drummers to keep from sounding like a bunch of rocks on a tin roof and the fact that they will have to have the skill to be able to play that short ditty together.

Now in a practice atmosphere this is a most excellent idea. This will teach them reading skills, the ability of teamwork, keeping them on their toes and keeping practice fresh. Especially since practices can be so boring and stale. Possibly after a while of doing this in practice and getting them used to this it might work in a game.

What my lines do now and we did in my high school line, is pre-write small ditties for them to learn and assign numbers to the ditties, making each with a different attitude and mood to fit the field situation. Research in history different war marches- Alexander the Great and Napolean were infamous for using war marches for intimidation. The drum instructor or drum major can hold up a number during the plays or just after for the line to play, kinda like football plays.

In short, great idea, it might work for you. But unless you've got a seasoned line, it probably won't. If it can work, it would be a great thing. It if does not work, it will fail epicly.

That's my opinion. Most on here don't think my opinion is worth two cents anyway. Good luck! Your line might be able to pull it off and I wish you luck!