Never thought of runs saved
So agree with your take. Especially, runs saved. Its the kind of moneyball stat every T20 team in IPL should be measuring. Although I think the other facets, could be better calibrated to fit the T20 game. Although T20 is not the version one needs to wait out. Coz its here to stay.
For romantics, I believe, Test Cricket is the format that needs to be paid attention to, not only to make it more lively but also engaging to the audience waiting 8 hours in stands.