That would change the love triangle from one person torn between two into probably all 3 people trying to figure out who they want to be with - Logan and Scott's tension had been characterized as BST (Belligerent Sexual Tension) for a while to the point Bendis even mentioned it on page during the close of Battle of the Atom. Jean's part would be a possible coming out story, Logan's would be does he want the Nice Girl or the Tsundere (Think either Sam and Diane or Shakespeare's Much Ado About Nothing if you aren't up on anime terms), and Scott/Scotia would probably have her jealousy over Jean misinterpreted as being over Logan - reading strong emotions isn't always accurate, especially when the person isn't fully trained AND it can be easily mined for drama.
Changing Scott's ethnicity, on the other hand, is unlikely to change much about him. Being both a military brat and orphaned before he could learn much about any heritage he had ("I have grandparents?") set his path, although it could lead to a story about him learning about said heritage.