Where? I dont actually see any benefit in them not having a full system since they are all limited to the same weight and they are all fixed into a single weight distribution (+/- a smaaaaallll percentage) so any weight saved cant really be repositioned to gain a better car balance. Also the gains in terms of C of G are likely to be bugger all as well if they are using a lighter system to get balast down low, assuming they could even find space to get it low without lifting other heavy components. Interesting, but probably subterfuge though I stand to be corrected.
The KERS system is a good idea in my opinion and i think it will boost overtaking it'll give drives more confidence to make the move rather than waiting 10laps for the driver infront to make a mistake. It definitely needs more power thou!!
Afraid I have to completely dissagree with this, if everyone has it, it makes no difference hence part of the reason for them dropping it last time.
Look at it this way, the guy behind cant get close to you through corners due to the drop in downforce he expereinces due to your dirty air. This being the case, the only time he can gain is as soon as he is running straight or isnt traction limited. If he then hits the Kers button, you see him gaining and press it too. Bearing in mind that you have got off the corner faster than the guy behind you due to his loss of grip and not being able to put the power down as early as you can, you cant fail to negate any advantage he might have gained before you noticed him pressing the button. Add in the fact that, by the time you have noticed him gaining he has run out of Kers power due to the pathetic power storage limits, if you press the Kers button now, you can in all probability hold the guy off despite the fact that drag increases with the square of speed and your rate of acceleration from the extra power boost will not be as high as his was momentarily. Its all pretty simply proved with a bit of maths. If some have it and some dont then thats a bit different but the fact they are power limited and all have it makes it a complete nonesense.