Though it isn't specific to the Zealot path. I think Zealot would be a ton of fun (and I am currently building a Barbarian with it). Though if you are looking to be more of a tank, Bear Totem would be the way to go. It limits your damage output potential, but you take basically half damage at all times while raging. With Minotaur you have great mobility and can stick onto people. With the Sentinel feat, you can lock down a lot of enemies. And if there's a situation where the battlefield has a ledge, you'll be getting a huge smile on your face as you gore enemies over it.