I had an Idea, but needs a few pointers to finalize what I had envisioned:
Earlier and more 'fair' greaco-venetian trade before the first crusade, no Greek Massacre of the Latins 1182 - no Fourth Crusade in 1204 aimed at orthodox Byzantium, more east-west christian cooperation against Muslim invaders, longer held (but still fell) crusader states, Columbus never returned and other (Byzantine, Portuguese, Venetian or not?) finds Brazil and a few Caribbean islands independently.
Byzantium is taken much slower and several attempts at an Orthodox Reconquista is attempted throughout 15th century, though it finally crumbles in later 1500s.
-Does any of this sound like something that would be worth developing
Earlier and more 'fair' greaco-venetian trade before the first crusade, no Greek Massacre of the Latins 1182 - no Fourth Crusade in 1204 aimed at orthodox Byzantium, more east-west christian cooperation against Muslim invaders, longer held (but still fell) crusader states, Columbus never returned and other (Byzantine, Portuguese, Venetian or not?) finds Brazil and a few Caribbean islands independently.
Byzantium is taken much slower and several attempts at an Orthodox Reconquista is attempted throughout 15th century, though it finally crumbles in later 1500s.
-Does any of this sound like something that would be worth developing