Realistically what does Caesar expect to happen when hr takes Vegas?
His army is like 95% illiterate retards and tribals who want to enslave the cityslickers, and his only competent leaders are military only per his admission (just an autodoc for the most important guy, no physician)
He conquers Vegas and disposes of the Omertas as planned, now what? Somehow go from monstrous conquerors to playing ball diplomatically? Who would want to do business with you?