There's nothing in the Byzantium event file which requires certain land/naval sliders to trigger. Hansa has one event which requires it to be one move away from land 5, so I think it's fair to allow one move for them in the 1683 session.
Checking other countries:
Bavaria - none
Brittany - none
Scotland - none
Asturias - none
Poland - none
Genoa - none
So we've got exactly one event which requires Land 4 to trigger. I don't think we're breaking the mod by instituting this rule.
Checking other countries:
Bavaria - none
Brittany - none
Scotland - none
Asturias - none
Poland - none
Genoa - none
So we've got exactly one event which requires Land 4 to trigger. I don't think we're breaking the mod by instituting this rule.