Its not ludicrous to say that Towns is already close to being a top 5 player in the league. He's certainly on a trajectory to be top 3.
Given age, contract, ceiling, etc... He is probably the #1 most untouchable player right now.
In terms of who I'd build a team around, yeah he's #1. He wasn't the best player in the league last season. And I'm not saying he's for-sure a Top 5 player right now. But based on what we've seen so far and the typical jump big like him make from year 1 to 2, the season might start with Karl Towns as one of the 5 greatest players in the league.
I like Porzingis as well. He's undeniably a great prospect. We should all be over the moon excited for New York Knicks fans. I just think he's getting a wee bit overrated based on the New York bias. He was really good. He wasn't THAT good. I'm not sure how much offense he can really create for himself. HIs efficiency dropped a little as the season progressed. Unlike some of the other rookies, he wasn't getting all of the defensive attention thanks to playing with someone like Melo. He certainly looks like he has a ton of potential.
It probably also helped that he was sharing a starting lineup made up entirely of veteran NBA pros. Lopez - 8 years, Melo - 13 years, Calderon - 11 years, Afflalo - 9 years. It would have been interesting to see what Porzingis would have done on a team like Philly sharing the court exclusively with D-leagers.