PHOTOSHOP DEVS: I would like the brush feather to never exceed the brush shape. Currently the larger the feather gets, the more it exceeds the brush shape. The reason why this is a problem is because I am using the brush shape as a guide when I mask. Since the feather exceeds the brush shape my mask is inaccurate.
If you want to give people an option you can have a checkbox or dropdown so they can determine the way the feather will work.