One area that I can make progress in is exploring what elements of the system would benefit from outside input. For instance: whether there are any glaring omissions in the feature set that somebody else notices. Another possible concern is whether there are any given letterforms that prove problematic for a lot of people.
This raises another issue: I'm a lefty and I've designed all the letterforms to flatter my tendencies. Already I've gotten feedback from one user that he finds or has found the letterforms awkward in general; I hope that it won't prove inhospitable to all righties.