I first understood the question as "what should have been done different if internet was designed today". I think it is a more interesting question. What mista

I first understood the question as "what should have been done different if internet was designed today". I think it is a more interesting question. What mistakes were made that later needed less than optimal workarounds? What comes to my mind are character encodings and i18n. It was solved in many different ways in different protocols.