I suspect it's saving the form during stamp creation, so there would likely be a lag while calculating and storing what is essentially a temporary stamp, along with whatever move calculations would be needed to stretch it. "Pull dots", "pull cords" or something would be pretty good for this, and minimizing accidental triggering. It's interesting, and if can't be done yet, would be a nice feature when hardware gets a bit quicker.
I've asked before.
Please, please, please, please, please, please let us scale our brush shapes. Ideally I would use my left hand and pull on an axis 'Y' to scale up my brush, or scale in 'ZX' along two axis. This should also have snapping as an option as well. Nice clean snapped shapes I'd we want.
If we could scale our brush shapes. EVERY brush then becomes MANY brushes. If I'm sculpting fingers with a tube type brush, I could scale in Y and have much longer fingers now. Currently I'm limited to uniform scale. With scaling the tip, we could have endless more options with just a single brush shape.
Pleeeeeeeeeeeease add this. Please! Every brush could become so much more, and way more useful to boot.