15GUILLERMO DEL TORO
Let's start with the most obvious choice, but also (sadly) probably the least likely to sign on. Guillermo del Toro is one of the most talented big-budget directors on the planet and the biggest fan of all monsters great and all in Hollywood, but more immediately, he's the director of
the best kaiju movie of the modern era: Pacific Rim - a project which, ironically, would likely not have come to fruition in the first place had its original spec-script not at one point been called up for consideration as a potential basis for the (then) hypothetical Godzilla reboot.
While del Toro's penchant for dark melodrama would nicely compliment the solemn tone established in the first film, but he's also demonstrated (not only in Pacific Rim but in the Hellboy movies and Blade II) an ability to mix "serious" genre chops with the kind of just-for-fun action that many fans felt was missing from Edwards' take on the material. On the down side: Godzilla 2 is likely to be under much heavier studio control than the first film, as Warner Bros. attempts to build its "Kaiju Universe" leading to the King Kong crossover, and del Toro is famously reticent to indulge meddling from producers - having departed multiple projects and turned down others over too much interference.