[Future Snake Eater]

The grass area of the mall is only about 200 yards wide and a half mile long. Jumping could end up with some hapless paratrooper hanging from the top of the Washington Monument.

Which would be one of my major reasons for why it's not a good idea. However, I refer you to my original statement: it would look cool if they did.

[GreyFriar]

I know your original statement, but made my for those who might think that “look cool” means that they should actually do it. ;)