Many npcs or lore characters from many races or classes have a ' symbol in their names especially trolls, blood elves and orcs but pandarens, dwarves, night elves, draenei and many other characters have this in their names too and finding a random name takes much time on high populated realms and usually they are not looking good with your character so allowing us to put ONE ' symbol (so not names like R'a'u'l'n) in our names would be awesome.
Some lore characters use this symbol:
-Vol'jin
-Kor'Thazz
-Gul'dan
-Kor'vas
-Zul'jin
-Kael'thas
-Kur'talos
-Lor'themar
Some lore characters use this symbol:
-Vol'jin
-Kor'Thazz
-Gul'dan
-Kor'vas
-Zul'jin
-Kael'thas
-Kur'talos
-Lor'themar