But there is a Turkish name, it is
Rum Selēukluları, which in English is "Seljuks of Rūm"
Also, may I ask how you can confidently speak for all Turkish players who as you state, will not like this term?
As mentioned above by Eisberg, matmohair1 & Atabeg, according to all Muslims of the time, Anatolia had belonged to the Roman Empire for over 1,000 years, and hence Arabs used the term
ar-Rūm when referring to that area. When the Seljuks burst into the scene in the mid eleventh century, they simply borrowed the Arab term as they had no term for the Roman Empire of their own. This happens all the time in history with peoples migrating around and using a term not native to their language.
Also, look at the city of Erzurum in Eastern Turkey, that name itself derives from "Arz-e Rūm" or, "The Land of the Romans" in Farsi (Persian). Is there any nationalistic outcry in Turkey with using a Persian name for that city?
Many of the other names in Turkey are derived from their former Greek names (eg, Nicaea -> Iznik, Smyrna -> Izmir, Attaleia -> Antalya, Ancyra -> Ankara etc).
So please don't be ultra-nationalistic and simply enjoy this great game and great mod!
The name also pays homage to what was anyways. It's better to remember history, not bury it...