No, I did not. Scenarios are all over the place, hence my use of the word random in that context. They can contain all kinds of triggers and map configurations. Skirmish and Random maps allow standard gameplay only.

It is physically possible to do it with both a bow and (some kind of) crossbow, the only question is if it physically makes sense, because indeed the energy would be distributed, so it wouldn’t work against somewhat armoured troops. I doubt a crossbow able to do that was invented at the time, and for a bow, it’s a shooting technique, although holding 5 arrows in one hand could also work (but it’s just a variation of what they were already doing of holding at least a couple of arrows on that hand). I guess the case for barbed arrowheads, put forward by A. Siddiqi, comes from the whole quote: "When I give you the order to shoot, let fly at them swiftly with a five-arrow volley (bi-al-banjakan). The people of Yemen had never seen war arrows before this occasion", which seems to me puts the focus on the arrow themselves, although if taken too literally.

Lopess is right here. "Macrobia" is more of a mythical Greek term, and using "Somalia" or "Somalis" for the era of the Periplus would be an anachronism, as that specific identity developed later. The ports you listed (Opone, Malao, Mundus, etc.) weren't a unified empire, but rather wealthy, independent trading hubs. In my opinion, City-States of the Horn of Africa (or Northern Horn Kingdoms) is the most accurate and objective choice. They operated much like ancient Phoenician or Greek city-states: politically independent but sharing the same culture and trade routes. If you prefer something with more cultural depth, Land of Punt is also an option, as it refers to the ancient roots of that specific region. The other terms don't fit as well: Cushitic is too broad (it's a massive language group), while Habashat and Automoli refer more to ancient Ethiopia and Upper Egypt/Nubia rather than the Somali coast. I would recommend going with City-States of the Horn of Africa or Land of Punt if you want a more distinct name for the faction. 

I opened a ticket for your (our) problem: #8922.