Suggestion (current ver. 12.99):
One thing that's bothered me about some of Adobe's standard fonts is the way their hyphen-minus ( - , U+002D -) looks. It's noticeably different from the "minus sign" ( − , U+2212, −) looks. The actual minus sign has the same style and width with the plus sign (+), while the hyphen-minus doesn't.
Compare these for example:
+1
−1 <= real minus, nicely aligned with +
-1 <= default hyphen-minus, has shorter width and thicker line
This is admittedly very knit-picky, but it's a bit of an eyesore for the typographically inclined. It'd be awesome if you could convert all the displayed negative signs from hyphen-minus to actual minus. (I've done this myself in the past, so I know it's not too complicated -- just add a function to handle all number displays.)