"Eton
I can agree that saving kers for one final lap is unrealistic, but I can't agree that it gives anyone an advantage if anyone was implying that. If you give up positions and drive your entire race in dirty air just to have one fast final lap, you're ruining your own race results.
It's an advantage in our league. Just yesterday, we had a manager win the race because he saved most of his KERS for the final lap while the rest of us used it to get out of traffic. He basically leaned on KERS for most of the final lap and went from about 5th place to the lead. It's a legit win because that's the way the rules package is, but for me personally I think it makes the racing too artificial. In fact, most of our races lately have come down to who has the most turbo-boost left for the final lap.
The reason I like the Push-to-Pass model of IndyCar for iGP is that the manager can't control how long KERS is active, only WHEN it is activated; and the manager only has a certain number button-presses for the race (in an ideal world, it'd be scalable based on the race distance - 10 pushes for a 100% race, 5 for a 50%, etc., but the implementation would be the key issue). So instead of a "get out of traffic free" card, KERS becomes a strategic weapon that requires judicial use and good timing.
I realize that this is just pie-in-the-sky thinking and that it likely won't be changed, but at the risk of sounding "grass is greener" I certainly would prefer it to the arcade-ish KERS implementation we have now.