I usually get in line nice and early, or make a beeline for the Wok as soon as I board the ship. I like it THAT much; I'm a Mongolian BBQ/hibachi FIEND. 🙂
I can't see them doubling the size because I don't think they can increase the linear distance that's used for it along the buffet (i.e., how much counter space it takes up).
It also MUST be in close proximity to high capacity wash-sinks, and if you've ever watched the continual dance of the employees as they rotate the woks from the cooking station to the wash-sinks and back, you'll understand why.
Many newer ships have Jiji's Asian, which has the same complimentary Mongolian Wok offerings for lunch but in a sit-down, fill-out-the-card-with-your-choices setting, which was awesome. Mardi Gras also includes this at Chibang! as well as an expanded Asian menu. Caveat: Chibang! is not open for lunch on embark day on Mardi Gras, whereas on other ships, Mongolian Wok and Jiji's ARE.