If you told me right now I could have KP, or next year draft Doncic or Porter, I'm taking Porter/Doncic.
I don't see a superstar in KP. I see a nice player who will make some all star games as long as he stays in the Eastern Conference, but I don't see a guy that would be a WC all star, won't be an all-nba player, and can't be more than a complimentary player on a title team. OTOH, I think there's a very good chance a top pick next year is a superstar. Yes, that's a big IF, but I also think that KP staying healthy long-term is a huge IF also.
If we do trade for him, I hope I'm wrong. But I don't think so.