To be fair, the injury timetable and start of next season line right up so this could end up being a non-issue at the start of next season but I am 100% biased in that I don't want wiggins or parker AT ALL as far as "fit" goes. I still think Embiid is fully in the discussion for the #1 pick in Griffin's eyes for two reasons- Wiggins and Parker don't fit completely in our lineup, and a center (with the right coach, of course) can develop without a ton of pressure or attention in our lineup because of Kyrie and Dion. My biggest fear is that we don't draft Embiid and we're underwhelmed with Wiggins or Parker while Embiid is showing his potential HoF quality on another team.
But you could say the same thing if we took Embiid. He could have injury issues while Parker and Wiggins are the league's next studs.
Also, I really disagree with you that Wiggins and Parker don't fit in our lineup. They both play SF, and we haven't filled that position since Lebron left. This is our perfect draft. The top 3 prospects filled our positions of most need.