There are a couple new entities I would like to see:
&hy; = U+2010 hyphen
&nbhy; = U+2011 non-breaking hyphen
I don't know if I'm the only one who does this, but I use hyphens all over my documents, and repeated occurrences of "&hy;" will be easier to read (I'm pretty sure) than "‐".
The two-letter form is, of course, derived from "­".
I don't use non-breaking hyphens nearly as often. "&nbhy;" comes to mind only for the sake of having symmetry with " ".