WWE have made HIAC matches a lot less dangerous in recent years, preventing the wrestler's from leaving the cell during the match. Obviously this helps keep the wrestler's safer, but it takes away a huge element of what makes the HIAC match so exciting. The last time two guys were on top of the cage was when Triple H pedigreed Jericho on the roof. I'd love to see a big bump take place during Cena/Orton, but just can't see it happening.