Snails to…flies?

My animal is a snail, but what about this animal in a thousand years? I think snails will become more exciting creatures. “How?” You may be wondering. Well, most people think that snails are tiny helpless creatures, but I think that will change. Most likely, after such a long period, waves will start getting rapid or water levels might get higher. How will these tiny creatures even survive? I think they will adapt to have wings. They would be able to jump-fly. They will be like flies, but less...annoying. They will still eat plants only from high trees and sometimes land for decaying animals. They will also skim over water for decaying fish, algae or a drink. I also think they will have bigger but lighter shells.