Need more control with Hair Clump sizes

I just noticed that when you add clump effect to a hair particle system using the clump tweak it clumps the whole hair in the same way, but when we want it more an animal there are zones like at some places the clumps should be smaller, at other places larger. If the devs could kindly let us use a weight paint or something for the size of the hair clumps it would be totally awesome Thanks a lot!