Soaring is a feature introduced in these remakes, where you are able to fly on Latias/os with the use of the Eon Flute. While soaring you can come across flying Pokemon and can engage in a battle/catch them. You can still soar on Latias/os even when you release them as well!

Do you like this feature? Do you wish that they'll bring it back in future games?

I liked the feature, it was fun being able to fly on mega Latias/os. I hope they'll bring this feature back, it doesn't even have to be done with a legendary either, but a regular Pokemon that can fly would be just fine to use.