If you add the "Toraignya," then my advice is to make it an offensive unit. Btw, I made the Axumites Aggressive level 4.
Here's a suggestion to the unit, though you may want to edit it a bit, I don't know how strong the other UU's are, so I don't want to make this one too strong.
Icon: 9
Unit abilities: Foot Unit
Required Resources: Iron
Pre-requisite: Bronze Working
Attack:3 Defense:1 Movement:2
I gave it 2 movement, because all the other civs seem to have units with 2 movement, 3 attack and 1 defense (i.e. Egypt has War Chariot, Nubia's horseman is like that, and there are others I believe)
One last edit... I just realized Nubia is allowed to build EVERY unit since I created a new civilization for it, you should fix that.
Maybe that wasn't the last....
Immortal Icon (54) isn't in use, maybe you might want to use that.
Wow...I'm really posting a lot today:
Mounted warrior icon/unit is also not available to anyone (except for nubia, of course) as well as one or two more units that I can't remember. Also, you could use the English UU, the Man-O-War (icon: 63) for the Mamlek to prevent confusion with Galleys.
Last one...I promise:
I noticed all capitals had walls and courthouses, you might want to add that to Axum, and perhaps Marib, as none of the cities in the Axumite empire have either and only Marib has an aqueduct as it had a dam in acient times. Axum should have an aqueduct as well (there's an ancient swimming pool there, and they're the ones who built and rebuilt the Marib dam, so they obviously had the technology.). Finally, there was another dam built by the axumites on the mainland, though I don't know what city it was in...I think maybe Metera. And finally, can someone help me in finding the ruler of the Axumite Kingdom in 250? So far I only found Queen Candace in 332 B.C., which I still don't trust.
Sorry for breaking my promise, hehe:
Kohaito has a dam, so it should have an Aqueduct and be size 2 if it isn't already that large.
Meroe should still be the capital, I made a mistake. The capital was Napata BEFORE Meroe. That is, until 300 B.C., so Napata should have the forbidden palace and meroe should have the regular palace.