I think one of Burton's biggest question marks, for his overseas and/or NBA aspirations, is how good of an all around point guard will he be when he's surrounded by talent similar to, or better, than himself.
From day 1 at Penn, even as a TINY little freshman, he was unquestionably the best player, and their coach put a lot on him to score and make plays. He had talent around him at Penn later on in his HS career, but there were none anywhere near his level. He distributed the ball just fine, but everyone knew the best shot they could get, on most possessions, was whatever Burton did for himself.
And now, it seems like he's in a similar situation at ND.
My guess is it will be hard for Burton to ever defer to anyone else. And if he were at IU, I don't think he'd be deferring to KW or Malik. He'd look like a faster, more refined, always attacking version of X...but likely wouldn't look to pass as much as X does even.