The word “mainstream” is used as opposed to oddly specific obstacles. A dialect, like, say, Mandarin is just a fact of life, as opposed to, say, encountering someone who wants you to adapt what you say into Klingon.
“Six letters” is chosen because it matches average nickname length and is a good starter point for compatibility. Letters from most alphabets can be swapped with letters into other alphabets, so that is no issue. As for logographic ones, most Mandarin characters do equal a phrase that would equal six letters.
The word “mainstream” is used as opposed to oddly specific obstacles. A dialect, like, say, Mandarin is just a fact of life, as opposed to, say, encountering someone who wants you to adapt what you say into Klingon.
“Six letters” is chosen because it matches average nickname length and is a good starter point for compatibility. Letters from most alphabets can be swapped with letters into other alphabets, so that is no issue. As for logographic ones, most Mandarin characters do equal a phrase that would equal six letters.