Small g is unreadable. I obviously know the alphabet and despite that it took quite some time to understand what letter is that.
Perhaps they should've used something similar to the 9. However then it wouldn't really look like a lower-case g.
xxx
x x
xxxxx
x
xxxx
It looks a bit like a 9 but the descender is different.(Could play around with how many x's to put on the first and third lines, particularly whether to set the first/last bits on those lines as "corners" or make it more rounded.)
I would also modify the top of lowercase e in a similar fashion.