One other thing it will do is posistion the air better for where the snowplough would be on last years Brawn, and with the DDD ban for 2011, more air will have to go under the car for it to work properly in my opinion.
The R29 was crude in relation to the same development on the R30, but if the STR6 can look what the R30 looks to the R29, Torro Rosso will be onto something as well. However, for 2011 im expecting to see more nose cones like the Brawn as the pressure zone and frontal aero map will need to be shifted downward to aid the CoG at the front.
Im gonna say that this is testing for 2011 already started, as we already know that more or less every team is at 50% development on both 2010 and 2011 cars, Lotus are the only team at 100% on the 2011 car development, Mercedes will be %70 on 2011 and im sure that there will be enphisis put toward 2011 for some teams after this weekends GP.