Thing is, you're talking about "arrangements." If you play an arrangement, you play the notes on the page and your ability as an instrumentalist to put your interpretation on the music has all but disappeared. If you play in a big bunch of unison players, likewise. As far as I can make out, this was Jack's take, more or less. That doesn't take away from the fact that you can do what you like with the tune if you're playing it solo in or in a very tight agreement with one or two others. But how dull. And if you do it in a session it becomes a mess. Doing your own thing in traditional tune-playing, with reactive listening to your fellow sessioneers, is a time-honoured, collaborative, ego-free and fun process. No room for predetermined arrangements, less still, dots.