My starting point is definitely giving the opportunity to the attacking side to continue their attack with quick ball from the breakdown.
So, yes, I am saying that the first attacking support player only has to legally join the ruck, which means binding on any of the defensive players there who may or may not be trying to steal the ball. If the defense hasn't been able to steal the ball before the support players arrive, then at that point they must release.
The upside of course is that if the attack support is slow (read Wallabies) then the defense has a pretty clear go at the ball without the likelihood of being cleared out which is really just hyperbole for being tackled without the ball. Any clear out at the ruck which sends a player to the ground is really a tackle without the ball and should be penalised.
The way I see it, officiating the breakdown at a tackle situation in this fashion will ensure quick, clean ball to either the attacking side (which has the advantage) or the defending side if the attack support is slow. And importantly, no more wrestling on the ground by any number of players under the guise of being in a ruck and contesting the ball.