Does that mean more water under the bowl and less around the sides?
I definitely agree about enlarging the spout. I have a Georgetown Pottery G-5 and like the lip to keep the lather in the bowl; it also allows me to squeegee the lather from the top of the brush and reload it into the tip of the brush. I do like your handle better. The G-5's handle doesn't give you something to stabilize it when carrying it.
I would suggest a flat thumb platform on the top of the handle to brace with your thumb and maybe a notch on the lower handle to brace with your middle finger when carrying/holding.