you have no idea how this game plays. You haven't played it...
But even so it's a Bethesda game. An rpg. Have you played their other games? It's not going to wow you with its combat or gameplay. It's the exploration, world building, and immersion in creating your own character in this universe with the lore around it that is the main draw to these types of games. That trailer showed that'd exactly what you'll be able to do when the game drops.
Plus if the modding community picks up this game like they did Skyrim and Fallout 4 you could easily end up making this game whatever you want and be playing it for 10 years