Ottomans are the only civ in the game that completely lacks any sort of native shipment. I suggest adding in Berbers, Sufi, Sudanese and Moroccan units to their roster of shipments, and maybe Tupi/Caribs/Siminole for a what if scenario of them going to the new world chasing after the Spanish and Portuguese.
Germans, Dutch, Portuguese and Russians also lack an age 2 native ally shipment. giving age 2 Nootka/Shaolin/Klamath to the Russians, Tupi/Jesuits/Cannoneers to the Portuguese, and Comanche/Cree/Cherokee to the Dutch and Germans would be a nice addition and put them in line with other civs.