Greg, I'd make the little beggers just practice with each other (and only each other) for a few months, see if we can't get some osmosis going
(sorry, hate case studies with such an either-or polarity, they just don't exist in real life)
Michael, "Ranks are checkpoints in order ...", nicely reasoned and I can happily accept this one. However, I've had more experience of the emphasis being placed on the rank itself, rather than it's intended function.