Thank you very much for this faction proposal. There are some things that strike me as odd in your post, however. Could you please clarify them?
1) The height of the Kingdom of Aksum was after our time period. Aksum during our time period is in what is known as the 'Proto-Aksumite' period. Are you referencing a Proto-Aksumite state of some kind?
3) Do you have any evidence that the Kingdom of Aksum was Jewish? There were a few temples found in the region dating to before our time period, but I have never come across any assertion that the Kingdom of Aksum, at any point, had Judaism as its state religion. Has there been any new information on Judaism during the Proto-Aksumite period?
6) Ioudaioi Taxeis, with their blend of Middle-Eastern and Hellenistic equipment, would not be suitable as a unit from East Africa, surely?
What are the reforms you have concepted based on?
Also, regarding the images you've posted- Do you have any sources for them? The image of a ruler on a horse, surrounded by guardsmen, does not look very Aksumite to me. I have not come across any mentions of such leaf-shaped and curved short swords on the ruler's waist being found in Aksumite archeological sites. Although admittedly I lack access to up-to-date sources.
They do, however, look very similar to weapons used by the Bini people of the Kingdom of Benin in West Africa, over a thousand years after EB2's date. In fact, a lot of the equipment in the image you've posted matches depictions on Bini sculptures and plaques:
The depictions date to the 16th and 17th centuries AD. Please note the similar spearhead shapes, similar helmet on the mounted rider and the central figure on the plaques, the similar leaf-sword shape, and the similar pointed-teeth (?) necklaces.
I'm sorry if this sounds hostile or disparaging. If you could post some sources to back up your proposal, it would be great. Thank you very much.