Okay, so let me put some more ideas into this rucking idea to see if we can't flesh it out, this is all a bit of a brain dump, first swing at it type thing, so bear with any typo's or going off track....
In terms of incentives to not use "Hold Back" all the time, I'd hope that a chance of gaining possession was incentive enough to select one of the other 2 options.
For a defending player, "Hold Back" should offer a very minimal to zero chance of gaining possession. Nobody is going to offer the tackler any backup, so he's unlikely
going to win the ball back.
For an attacking player, using this option will always bring 1 player into the ruck in addition to the ball carrier and tackler (otherwise it wouldn't be a ruck), so in
the instance of both sides having Rucking Aggression set to "Hold Back", the chance of retaining possession is always greatly on the attackers side.
It should be primarily a defence reorganisation and keep them off the try line tactic, the extra bodies across your defensive line forgoing the chance of taking the
ball. Hard yards are definately still possible for the attacker using the tackle breaking ability currently in the game and also with the quick pick & go option you've
implemented.
Imagine this scenario - your defending on the 40m line, your players are abit all over the place so you set you Rucking Agression to "Hold Back" to minimize your
opponents yardage and reset some of your defensive line. The attacking side pick and go from your poorly contested ruck, from the first pass a tackle is broken by a
forward/big centre and after a clever offload the ball is spun wide to a winger who gets well advanced from the rest of the attacking team but does have 1 of his team
mates close by.
Your fullback puts in a great tackle and stops him just inside the 22. You've got another 2-3 defenders now arriving to the breakdown area. If you keep your Rucking
Aggression to "Hold Back", your newly arrived defenders do not get involved but basically stand guard to the sides of the ruck. As the attacker had another 1 player in
close support, the ruck is very much going to swing in their favour and retain possession.
Selecting Rucking Aggression tactics of either "Balanced" or "Pile In" you would probably have won that ruck and now be on the counter attack... so why would you not do
it?
So the positives behind "Hold Back" for a defending player?
1. More players in defence to make a tackle
2. Greatly minimize opponents immediate yardage around the fringe
The negatives?
1. Vastly reduced or zero chance of gaining possession (perhaps say only 10% and thats with the opponent also using "Hold Back", if they have it on either of the more
aggressive settings then they will be practically guaranteed it)
2. On constant defence until an error or mistake is made
What about "Hold Back" as a Rucking Aggression strategy for a player already in posession?
Positives:
1. More players in your line to pass too/run lines
Negatives:
1. If your opponent has either higher setting chosen, you'll very, very likely lose possession in the next ruck
So it basically becomes a sort of game of chess... trying to out guess you're opponent and what strategy they are on or even luring them in to a false sense of security by using "Hold Back" for 3 phases so he starts to use it too knowing he is always likely to win it back as he has a support player in the tackle, then you switch to "Pile In" in the next phase and smash him at ruck time!!!
Or another, simpler idea would be to automatically reset the Rucking Aggression back to "Balanced" after each phase, to ensure your making a definitive choice otherwise it remains at the most default and game-balancing option?
Anyone elses thoughts & ideas welcomed.
And cheers for your feedback so far Lionmaul