The idea is that teams wouldn't be conceding the penalties in the first place. I also like the recent idea suggesting of drastically reducing the number of substitutes allowed - more tired players will lead to more gaps appearing.
understand the idea but penalties happen, they are part of the structure of the game, and when they do the incentive to run the ball is diminished with a 5 point penalty on offer.
when penalties still happen as they inevitably will, you are' loading the bases' in favour of taking the 5 point penalty- what incentive is there to go for a 3 point try? Your intent to reduce penalty infringements is there but equally once a penalty is committed you kill the open play option
increase a try to 7 points make the reward greater