Should this site cover only spoken language or also written language, including alphabets and other writing systems? Or should it allow the latter only to a certain degree that overlaps spoken language in some way?
I agree that linguistics.SE is the place for discussion of writing systems, if only because no other exchanges are likely to cover this topic. Even if any of the other language SEs did cover writing systems appropriate to their subject, it's unlikely that they'd be willing to discuss comparison of writing systems. So, I vote yes.