Ogami, I still don't think the top teams will actually limit themselves to the set caps. Ferrari's F1 arm are a profitable organization despite 400m$ in spending - would they really prefer to spend just 100m and keep the rest, or spend that rest on making the car better by paying some FIAT engineers to run their simulations?
And turbulence is something too chaotic to have a set standard - one car will have lots of small vortexes, another will have a huge one off the rear wing. One could create lots of turbulence in a straight line, while the other will fudge it under jaw. How would you determine if one is legal and the other one isn't? It'll reek of politics.
WhiteBlue, This year's close laptimes have nothing to do with manufacturers helping independent teams, though. I suppose it's more of a thing that eventually, in the fourth year of stable regulations (aerodynamics-wise) and an engine-freeze halfway through that pretty much locked all engines to within 50HP of one another. You can see that teams started copying each other right down to the details - virtually everyone has a sharkfin, sidepod-connectors, a bridgewing (or suitable replacement), etc. Gains become smaller when all you do is perfect the existing parts..
It makes a lot of sense to task the manufacturers with KERS development. They're the only ones that gain from it anyway - unless Toro Rosso suddenly decides to built road-cars as Ligier did - and they could get it together with the engine-packages (or mix'n'match a Ferrari engine and BMW drivetrain?).
I just don't like the shift from aerodynamics towards drivetrains that much... Visible changes > Invisible changes, at least as far as today's top-secret F1 is concerned. It's not like we'll get an explanation by the teams on each new upgrade and development on their KERS systems. With aerodynamics, we can at least look, try to figure out how parts change the car or even run simulations.