I posted this in another thread, as there already redesigning their car entirely I imagine not as much as some expect.
The Aero regs not changing isn't as big a deal as some people are making, the 2012 regs when combined with the new engine/ power regs will even up the cars massively.
The output of exhaust gasses from the new engines will be a hell of a lot less and will not be able to be used to provide rear stability for the car, which will impact the effectiveness of the rear diffuser.
The changing of the load tests will wrinkle out any defincincies in possible flexi wings and noses - so thats another area closed up
The restriction on using DRS around the whole track in qualifying to just those of the DRS zone will negate much of the difference between teams DRS efficiencies , so top speed becomes more valuable
No more DDRS
The added capacity of the Kers system means that teams who still havent mastered Kers will be even weaker
The New engines cant even be compared yet, their could be massive discrepancies between the outputs of the different models
God knows what tyres well get in 2014
People saying Mercedes will be gutted, I dont think they'll be that gutted, 2013 will see the teams close up a lot in the aero side. There wont be any major gains from what we currently have in that department with the tests tightening up, removal of DDRS, removal of DRS around the whole track. The team that will be licking its lips at both these years will be McLaren and Ferrari. The team that will feel the pinch will be Red Bull.
I have to agree I think it helps McLaren and Ferrari the most.