If i were to find a positive out of KERS, is it does improve hybrid street cars.
Let me explain.
I am of the opinion that race car engineers are better than street car engineers. In cars like the Toyota Prius and Honda Insight, one of the major goals of Toyota and Honda was to make the hybrid systems cheap.
Back when i used to sell Subarus, I meet many Prius owners and wanna be hybrid drivers that hardly know anything about car engines and would ridicule us for not having a hybrid yet the gas mileage on our cars was similar and gas prices had yet to skyrocket. Many of them (not all) are a new type of car buyer that is prone to believing the "save the world" propaganda.
Anyways, i feel that a race team is better at developing technology as their main concern is winning races instead of being cost effective. One leads to a more efficient part while the other gives out something that is "just good enough."
Consider William's approach to KERS. They have developed a flywheel system.
This video explains it.
http://www.youtube.com/watch?v=ySx6_vERTwg
with that said, if F1 begins to develop these systems, they will be a sharp increase in the tech of KERS for street cars.
Personally, if i had it my way, KERS wouldn't run out. Instead of 6 secs, the 80hp would be there the entire lap. With that, the systems would be better developed for street cars as this is probably the main reason F1 took up the idea in the first place.
I realize that passing might be difficult but at least with this, there will be no blocking as it is all i have seen KERS accomplish.