fingering issue (how to show finger substitution) and font issue (can they be embedded?)

I assume it’s a known issue that text styles don’t presently work as intended with fingering, but there also needs to be a remedy for representing finger substitutions.

http://en.wikipedia.org/wiki/Finger_substitution

I’m not familiar with other instruments, but finger substitution is most frequently indicated in piano music by a ligature mark connecting the two numerals. It resembles a close parenthesis rotated 90 degrees to the left.

It turns out that there’s a symbol that looks like this mark in the F2 Keyboard popup -- it’s the rightmost character on the bottom row -- but I’ve been unable to use it without causing MuseScore to crash.

A satisfactory workaround has been employing a symbol from a typeface I happened to have on my computer called “WP Phonetic”; the capital M of that typeface functions exactly as it should, i.e., it creates an elevated ligature that straddles the characters on either side of it.

Unfortunately, there doesn’t appear to be a way of saving fonts along with MuseScore files, as there might be with a word processor. (Microsoft Word, for example, permits the embedding of TrueType fonts when saving a document.) While this isn’t an issue for for creating a PDF of a score, it is problematic for sharing a score in MuseScore’s native file format -- or even for uploading the score to musescore.com, where the character will display as the letter M instead of the ligature.

In short, I have two questions: (1) is that character in the F2 Keyboard intended to function as a ligature for finger substitution (and, if so, are there plans to fix the bug currently affecting it), and (2) would it be possible in future releases of MuseScore to embed additional fonts that one might wish to use, e.g., for fingering, tempo, staff text, etc? (Unfortunately, the typefaces I'm using for such elements also get replaced upon uploading to musescore.com.)