Porzingis is a good player, but we shouldn't get carried away.
On a lottery team, he put up 23 points and 7 rebounds on 44/44/79 shooting with 2 TOs and only 1 assist per game.
His efficiency is a big concern moving forward. For a 7'3'' guy only 33% of his shots come within 10 feet of the rim, and only half of those are at the rim. 43% of his shots are mid-range. He shoots alright mid-range, but that is not a reliable scoring distribution.
On top of that, he is a pretty bad rebounder. Al Horford has never had as bad of a season per36 as Porzingis had last year, and he's considered an average rebounder for his position.
He's not agile enough to guard guards on the perimeter. He's a bit of a ball-hog with a pretty poor courtview for passing.
He had a 31% usage on a 29 win team. This is typical good-player-inflated-stats-bad-team stuff.
I'm not even sure he is as good as Chris Bosh was at the height of his career, or Lemarcus Aldridge. He is more like a Bargnani-strong type player.
On top of all that, there are real concerns about his long-term health. He hopefully will come back fully healthy from this ACL tear, but 7'3'' guys don't last in the league.
If the Pelicans are looking to build a real team, I think they'd much rather have either Lakers, or the Celtics, or even another team's trade package.
Obviously the potential 1st overall pick is a big part of the Knicks' package, but even if they finish with the worst record, there is still only a 1 in 6 chance they get the first pick.