The noise factor was probably the first thing I thought of.
I heard a Harrier pilot once remark that the AV-8 could stay aloft on its own noise alone.
I tend to believe he just might not have been joking!
Anyway, I hope the Blues stick with the Hornet for a long time (looks like they don't have a great deal of choice). It's a beautiful show plane. I'll never forget seeing them in the F-4j Phantom back in the early 70's......Awesome doesn't even begin to describe.