Looking at this question: If Alexander the Great never existed?
This is a lovely question, full of alt-history goodness. However, it is so broad that it is just not practical to address in an SE-format forum, and the question is bound to be put on hold. Fair enough.
So ... for questions like these, where what OP wants is just epically out of scope for SE, is it appropriate to point him to the right place for his style of question? In this particular case, OP's question would be welcomed with slavering glee, precisely here: https://www.alternatehistory.com/forum/forums/alternate-history-discussion-before-1900.6/ . That forum encourages broad questions and back-and-forth discussion, which is what this question really wants. Turns out they've already taken a swipe or two at the "Alexander Question".
I'm a little reluctant to drop that on a comment though, not really wanting to be an SE reverse-advertiser.