use selection with all colors as brushtip

paintstorm Studio already has the lasso selection --> capture form -->apply to current brush function,
what is quite nice.
But it would be a great improvement, if not only the captured form, but also the whole lasso-selected part of an Image could be used as a brushtip. There is many Software around - otherwise less featured - that is capable of this. These "image-brush-tips" are not only meant as simply cloners (although that may be useful too), but should be handled like other brushtips - pressure sensitive size, opacity, scattering,...
Would increase the usefulness a lot
P.