It might be slightly ASBish, but what if;
1. Nicopolis 1396 is a victory for the Crusaders, perhaps reversing much of the Ottoman gains after Kosovo 1389, inciting the Bulgarians, Wallachs and Serbs to revolt.
2. Timur Lenk (Tamerlane) wins as historically 1402.
3. The Byzantines go on the (limited) offensive they are capable of, breaking the blockade they are under, perhaps trying to expand in Thrace, going for Thessalonica and Nicea with Genoese support?
I don't imagine this will keep the Ottomans down. Their efficienc administration, tolerance and good leadership made them superior in the long run to any other Balkan or Mid-East state. But how long until they bounce back? What can be the Ottoman worst-case scenario? How long will Constantinople remain in Greek hands in this scenario?
1. Nicopolis 1396 is a victory for the Crusaders, perhaps reversing much of the Ottoman gains after Kosovo 1389, inciting the Bulgarians, Wallachs and Serbs to revolt.
2. Timur Lenk (Tamerlane) wins as historically 1402.
3. The Byzantines go on the (limited) offensive they are capable of, breaking the blockade they are under, perhaps trying to expand in Thrace, going for Thessalonica and Nicea with Genoese support?
I don't imagine this will keep the Ottomans down. Their efficienc administration, tolerance and good leadership made them superior in the long run to any other Balkan or Mid-East state. But how long until they bounce back? What can be the Ottoman worst-case scenario? How long will Constantinople remain in Greek hands in this scenario?