I think Wiggins will be good not great.
Wiggins is a FOR SURE Allstar. Why take the riskier guy with a "higher ceiling" when Wiggins will be a star? He may not be Lebron or Kobe, but he's a future allstar/team leader in the least.
Embiid has great POTENTIAL, limited experience, possible back issues. Why go there? If Embiid is all we can get then we get him, but why pick him over Wiggins or Parker?
Why go for the guy with the most question marks on what could be the draft of our lifetimes?