Indeed! If storage is as safe as they claim, you could store it in the heart of a major city. God bless the governor of Nevada!
Actually, you probably could devise a system that would allow you to do so. But when taken in a larger context, isolation is a stable geological formation is, on balance, the right thing to do in this case. It has to do with basic concepts of engineering, ideas such as multiple barriers of containment and defense-in-depth. Then there is the little matter of a cost/benefit analysis. Ever done one of those for a large-scale engineering project? I have, and the results are quite revealing.
Overall, an interesting subject area, this noo-que-ler stuff. You should read up on it sometime, you might learn something. I did for about 5 years after graduating college, and, if an ordinary slug like me can learn it, I'm sure a bright dude like you can. Check back here in a few years and let us know how its going...