Last I checked I was with you on this.
It's not a drill when you're running a full forward structure, it's more or less a match simulation then.
Being able to defend 1-on-1 is an asset you need in any era of the game, so putting the defending side under the pump 1-on-1 is good training to test the stragglers and keep everyone else sharp.
Offensively we look to isolate our targets in 1-on-1 or loose situations by means of switch plays, plain old quick movement of the ball, and sometimes holding the ball up through possession footy. Beyond that the onus is put on a level of understanding between the leading forward and the disposer reading the defense the same (similar to an option route in the NFL to those familiar) and aiming for the same pocket of space when presented. This obviously requires hard leading by our forwards, but we generally have the athleticism to cope.
Failing that, we centre the ball to a couple of designated hot-spots, which should be obvious to those watching the game. Our setup when the ball goes to ground still needs a bit of work though.
That's how you win games of footy when the heat is on and you are physically able to take it to the opposition. This talk of possession footy and flooding only works when you are able to keep up such a high intensity effort against your opponent. It's become quite clear that the sort of football built off that play is highly defensive and generally the last hope of the team employing the strategy, the exception being the Swans and maybe Adelaide, who display an incredible work rate to turn it into a form of attack. However, when the opportunity presents for them to play low possession, fast movement of the ball, they still play it.