This thought isn’t an unpopular opinion. Oda completely dropped the ball with Kid, but even more so, he completely dropped the ball with Law. Law’s story isn’t even close to done and it’s ridiculous Oda did squat to develop it. It goes to show you that Oda is OK with putting everyone on the back burner, including the Straw Hats, to develop random arc characters nobody cares too much about.
Law has been a victim of it, too. What is unpopular is to not notice that the reason for that is because of the presence of so many other characters. Most of us would much rather see the Supernova do things than Tama.