i'm going to design and build a "programmer's numpad", because I'm sick of awkward hand movements for writing brackets with numbers and commas and spaces etc. here's the first draft. make your modifications here: http://www.keyboard-layout-editor.com/#/ i'm thinking of adding another column, putting something between the numbers and the plus/minus.
I think that makes sense, I mean we can really just replace the space bar with a shift key since it's somewhat redundant to have keys which are easily accessible from the left side of the keyboard. Then all bracketing would be just one hand motion.