Hopeless to explain

, we are not going to create Total War mod, nor fantasy mod.
It's the year 1460, Constantinople was besieged in 1453, no need to add the non existing faction and even if we had such illogical plans, how could u imagine the existing of Byzantium with plain map around it (without all other neighbor states) in thousand of mile from HRE territory (that is the dead end of our todays map) ... so, the last answer is NO.
If u intend to ask such absurd questions further on, plz, for God sake,
READ the prologue at first.