Well that's the best thing about the game to me. Almost every natural element of the world, and every object that isn't nailed down (and even many that are), is a real tool for the player to use to have real control over. Sometimes it'll be physics based, creating that crazy open world destruction and mayhem we're all used to. But so far, everything is also discrete and unique, just like the tools in Link's toolbelt. Every body of water is a tool. Every patch of grass. Every rock and tree. Every piece of metal. Even time and energy. Each one of them has a specific function just like the hookshot had its specific function. Just like the spinner had its functions. Just like the Paraglider has its specific function. That's real open world gameplay to me. The entire world is a functional zelda item, and link is given all the tools he needs to use this item just as he would use any other classic zelda item. And then you add the numerous traversal options, the interesting enemy interactions, and everything else, and we're free to explore the possibilities. And this doesn't even take into account the fact that we're also going to get a significant amount of classic level design to take advantage of all these tools in more structured ways, giving us the best of both worlds.
It's amazing, and it really does make me feel like most open world games are not taking advantage of the possibilities.