I would love to see a serious take on a variable width coding font. I have a friend who made some edits to Avenir for me, making the minus as wide as the plus a

I would love to see a serious take on a variable width coding font. I have a friend who made some edits to Avenir for me, making the minus as wide as the plus and making spaces that come at the beginning of a line wider to make space-indentation more obvious. I've never had any problems with brackets and carrots but of course these font choices are some of the most personal of coding decisions.