I'm not a competitive player. (though I care about competitive play anyway)
I'm glad tripping is gone.
All my friends are glad tripping is gone. And they're in the didn't-even-own-the-game level of casual play.
It's simply a terrible mechanic from every point of view, even in a casual setting the're unfair and punish/interrupt players for no reason whatsoever. Tripping would be basically the equivalent to having item boxes in Mario Kart randomly explode on contact, you're correctly using a basic mechanic that you can't even avoid if you want to play the game, yet the game decides that you have to be punished for doing it right.
It's just not good, man, and I'm actually so surprised such a brilliant game designer as Sakurai ever decided to add it that I'm honestly even kind of doubtful that it was him in the first place.