My immediate thoughts are that the game works very well as it was designed.
Fully agree, if we speaking about all rules. And the problem with the outbalanced scenarios isn´t something about the rules, it´s the scenario setup itself.
If scenarios will be designed more balanced, there is no reason, to change any game rule.
I personally don´t need also any additional houserule, because i (and most other players) have choosen the CC system because of it´s very easy and fast playing system, and we have already to much rules, which is opposite the original CC intention.
Look at Battlecry,the "mother of the CC system", which has the simplest of all CC rules and this was the reason, why it was a big success years ago and enabled then all other CC variants.