I'll nominate southern California for the site of the DMB convention. The weather is almost always good. There are 3 major league teams within about 100 miles. It's in a very blue state, for those for whom that's important. It's not far from Las Vegas, for those who would like to plan a side trip. And, if the convention is held anywhere near my neighborhood (around Pasadena) there are hundreds of great Chinese restaurants. Not sure that the latter is a criterion for a DMB convention, but if it isn't, it should be!