I'll preface this by saying I have zero interest in the NBA or sports in general. I had very little knowledge about what the NBA Experience even was, but I got in free thanks to some CM friends.
I found the explanation of the activities inside to be a bit misleading. I assumed it was some sort of personalized coaching experience/tournament/whatever where you pay a flat fee and participate in a bunch of activities intended to mimic training, honing in on skills, etc, and you'd leave with a personalized video of your experience or something. This made me not even want to go in as I would feel like a fool going through that. However, I was way off, it's more like DisneyQuest But For Basketball. Personally, I have a hard time seeing how even a big NBA follower would be entertained enough inside to justify the admission price. There just isn't really that much to do, and the games/attractions that are there are very one-and-done. Either you already play basketball and the activities are nothing special, or you don't play and you'll stumble through them awkwardly if you even want to try them at all. So in other words its simultaneously not casual enough for non-fans/basketball players and not in-depth enough for those who do follow/play. Not a good fit for Disney Springs, I think, and I do think Disney Springs severely needs more entertainment venues to balance out the retail and dining.