>>11841570
I've come around to this opinion too. The increased verticality starting with SMB 2 led to more diverse level design, but I think it also makes the levels more spaced out and empty feeling. Having less control over your in air momentum also makes the game feel more tense, for better and worse. I personally enjoy it, but I can see why they axed it in later games as it doesn't really lend itself to exploring.
That being said, I feel like the land games don't get enough love in these 2D Mario discussions. The physics might not be as snappy as the console games, but the bizarre level themes do a lot to sell them. What other games allow you to ride a bubble to outer space?