Viable Byzantium
A less over-the-top version of Overpowered Byzantium by louk.rademaker, which you can find here:
https://steamcommunity.com/sharedfiles/filedetails/?id=1703626536
Do you want to play Byzantium, but don’t want the grind of 30 resets before you can secure that crucial alliance, or for the Ottomans to position their armies just the right way for you to skirt by them? Well, here you are. This mod provides Byzantium with mechanics usually reserved for other nations – including Manchurian Banners, Russian Tsardom mechanics, and Mughal culture assimilation – that allow it to stand a chance against any foe.
Byzantium in this mod is very powerful, and that is the intent of this mod. It does not provide particularly balanced gameplay.
NOTE: The "required DLCs" are not strictly required, but some mechanics will not be available to you.
Required DLC:
These DLC should be installed in order to use this item.
Europa Universalis IV: Purple Phoenix
Europa Universalis IV: Mandate of Heaven
Europa Universalis IV: Third Rome