While the train aspect is a bit weird, I certainly understand the reasoning behind it. In PH, the game required you to control the boat's direction as well as attack power. Limiting the travel component to tracks allows more focus on attacks and other game aspects, relieving the user of excess controls. And I'm sure the train's whistle sounds much better without the convention noise.
Everything else is typical Zelda fare, and will be a nice game to idle time with until the next Zelda Wii game.