You could get two passports and two 90/180 visas then you would be able to be there 180/180 days. Or 178/180 to allow you to leave and return. And just do that forever. Or maybe not. I haven't given this much thought but can't see why not
Hello Scunner,
What a good idea.
It's possible to be done exactly as you explained 20 years ago.
Now European police has a lost passport and ID network system.
No body can have more than one passports.
If you lost your passport and get a new one, Old one will alarm on the EU and Turkish borders as LOST PASSPORT.
We must work harder to solve 90/180 problem :-)