The mitigation criteria is supposed to allow covering for the grey areas, it doesn't matter if the refs decide not to apply it. TBH I feel the current system in place is the best way (criteria for starting level of punishment then look for mitigation), but the problem is the inconsistency with which it is applied, which arguably points to the ref's discretion being the problem. Giving the ref more leeway will likely not fix this.
The only change I think is that sometimes red is too harsh a punishment for what can be purely accidental incidents. I feel red should be reserved for extremely reckless or intentional stuff, not accidents that happened to end badly.
Sorry but no. If Ryan "did everything correctly" and was controlled and still smacked a player in the head with force, that only means he intentionally targeted the head. That is the only conclusion that can be drawn if you argue he was in control and nothing materially changed as he went in. If he didn't intend to hit the player in the head then we was NOT in control. You can't say he did everything right and was in control but then didn't intend to hit the player in the head, these are contradictory statements. There very clearly was force in the hit by Ryan, he hit that ruck the same way as a player clearing out would.
No way is Aki a passive defender, he is going forwards and driving into the tackle. Neither case had any mitigating factors.