Well, I was just wondering who your personal Big 4 are and how your personal concert of them would look like.
Mine are rather self-evident:
1. Blind Guardian
2. Helloween
3. Gamma Ray
4. Iced Earth
The schedule of the concert of my dreams would rather look like the real Big Four concerts, with an encore consisting of Dante's Inferno, Heading For Tomorrow, The Keeper's Trilogy and And then There Was Silence with members of all 4 bands - even though the encore would last about an hour

So, What about you?