I'd like to see more support for using non-Roman alphabets. Since we are supposed to create the profiles using the names of the individuals as they were known in their time and place, using only English for the LNAB is a real problem.
I tried creating my 3x and 4x great-grandparents profiles using Hebrew, but received errors. I could only use the English translation of the Russian transliteration. Not ideal since although they might have spoken Russian (they spoke many languages), they were Jewish, their legal names were in Hebrew and they spoke Yiddish and they lived in what is today, Ukraine. I had to relegate their correct LNAB to other last names.
And I'd love to see WT move away from using LNAB as the profile identifier. It depends on user input, which is not ideal and often not correct.