WI the Greeks never develop their alphabet and so this never develops into the latin, cyrilic, etc.... alphabets?
Lets suppose Greek writing deveopes in a Egyptian hieroglyphic/Chinese script sort of direction instead.
The Arabic and other alphabets are unaffected directly. They can develop their own way, its just the European alphabets we're getting rid of here.. Is the need for an alphabet so strong they would eventually drop their script and adopt a Asian alphabet?
The impact here could be rather huge...assuming some sort of Roman empire analogue still emerges we'd have a unifying written language unrelated to the various spoken languages ala Chinese.