Well, Justin and Flavius run off to the north. And actually Flavius (TSB) is Alexios' (FW) ancestor - possibly his father? I think there are a few stories which explore this (and carmarthen has theories on this).

I think we are actually leaving Barsoom for the Eagle fandom, Fandom Of AUs. (Although even though I deride them, I'm sort of writing an Eagle Space AU....)