Lots of things happenes to Wario. Yes, maybe he got rose air mobility, but he got lots of goodies too.
His Fsmash was ganged. It's powerful, but I like the previous one better.
His Dtilt is now a lot better, as it has less knockback and it's very fast now, meaning you can land multiple ones and follow up with other attacks, as well as being a good edge guarding tool.
Wario-Bike got a change. Wario never falls off randomly now, you can't gradually go up on your back wheel, and you can't stay on that wheel forever. Also, it has a hitbox after jumping off and letting it roll forward. You can also go up on the backwheel and Smash the front wheel down on others for great knockback.
His Dash Attack now always make opponents trip at the end of the attack.
His Up Smash is a lot better since it got changed.
His Down Smash is a lot more useful now.
The Waft feels overall more powerful, dunno if this is a fact
His Uair has less knockback
His Back Throw and Forward Throw got switched
Smooth animations, baby. He now feels SO much more natural, like he should be from the beginning.
And possibly more smaller things.
So yes, Wario definitely got changed. For the better and for the worse. I overall like this Wario a lot more than his Brawl version