Quite self-explanatory title about what's the purpose of this thread
Let's make some interesting worlds with Ottoman PoDs !
Not massacre of Mamluks in Egypt or no giving Mohammed Ali the title of Wadi.
Your PODs are good, but nobody gave Mehmed Ali the title "Dry riverbed containing water only during times of heavy rain". I think you mean Vali, which means "governor", or the Arabic version, Wāli. A province governed by a Vali is a Vilayet in Ottoman Turkish, and Wilayah in Arabic.
Later on, for a huge amount of money and a large increase of the Tribute, the Ottomans granted the Egyptian Vali the title Khedive, from Persian meaning roughly "prince", raising him to a higher status than that of the other governors.
There's actually a great story about Abdul Aziz's visit to Egypt. The Khevive, the Grand Vizier, and the Sultan were all in a procession on horseback. The Grand Vizier dismounted to lead the Sultan's horse, forcing the Khedive to dismount as well, as he was lower in rank than the GV, publicly diminishing the stature of the Egyptian ruler. The Sultan was pleased.
That in itself brings up an interesting point: The Ottomans never referred to the monarch as "Sultan", which is used much like "prince" is in English - actually almost entirely "princess". For instance, Durushevar Sultan, daugher of the last Caliph. The monarch was "Padishah", Master of Kings, or Emperor. "Sultanate" was used to refer to the office, much like "Principate" for the Roman Empire.