Earlier quoted context omitted.
designer here. by symbol-heavy languages i mean languages like Perl and Haskell which make heavy use of symbols (sigils in Perl and operators in Haskell). Myna was designed after my frustration with other monospace fonts combined with my (self-imposed) inability to use ligatures.
I think it might be useful to put some screenshots of other fonts on your page, to show what symbol or alignment problems yours corrects. Because I've studied a lot of typeface design, and I can't really figure out what you're doing, what pain points you're trying to address. Because when you say "and $, @, % seem ever mismatched?", I don't have the slightest idea what you're talking about. I certainly am curious tho…
about the alignment, i think the README might give an impression that it's solely about vertical alignment, but it's more about uniform flow of characters along with some resemblance with an actual symbol (which we can not have in ASCII).
for example, take the `Myna is my attempt to break some of these conventions to make things look a little bit even for programmers.