If you're used to drinking hot coffee (and particularly if you prefer strong, dark roasts), there's no question cold brew will taste different. It should taste lighter, sweeter and more balanced, but it should not taste watery. If you're finding it tastes watery, the best solutions are to increase your steeping time to a full 24 hours, ensure all grounds in the filter are initially soaked (via "Rumbling"), and potentially use a darker roast of coffee. Regardless, it will be impossible to replicate the more bitter and acidic taste of traditional coffee, so if that's what you're craving, hot coffee might be right for you.