>>215821012 (OP)
Make the Southern Greek half a capitalistic dystopia. No workers rights. Slavery is legal, you can sell your labor for a defined period of time by contract. You have no rights period. Housing policies do not exist. Everything costs money. You have to pay for a firefighter to show up to a fire. Every road is a toll road. Healthcare is only for the top 1% of earners. 90% of wealth earned goes to rent since housing is destroyed by private real estate armies. Everyone is given a handgun at birth which is the one thing you have a right to and cannot sell. You also can't get rid of it you must always keep your gun on you and can never take it off for any reason.
The Northern Turkish half a communist shithole. Everyone is assigned a job. No one is allowed to own property. You exist to work for the state which manages all the property you own. Free speech does not exist, you can only speak aloud certain phrases which have been previously greenlit. "Free speech" here actually is a terrible thing and it means you are speaking without consulting the Guideline to Approve Phrases (GAP.) Unless you're a member of the party (must be approved by 100% of existing members to join) then you have no rights to anything. Children are removed from parents at birth so the familial unit may die. Children are encouraged to rat on anyone they know and are the loyal eyes and ears of the state. Children only receive food if they catch people going against the states wishes. More than half of children die of hunger every year.
I want each half to suffer similarly under different systems for a long time and teach each other that the other side is evil while they both live awful lives in fearful paranoia until they've built up their military capacity and hatred for each other to such a point an all-out conflict is unavoidable and they commit horrible cruel campaigns of genocide by famine and mass execution upon each other. The war will be televised and available to watch for $10/mo