No modest cop out here. With nothing restricting me, I would probably go to the next Hand Made Bicycle Show and meet the top builders to decide who I would commission to build my dream bike.
It would be a fast, comfortable, lightweight century bike, frame custom designed by a master to perfectly suit my dimensions, physical constraints, preferences and riding style. Not sure about the material. Might be CF or Ti or one the the new super-exotic steels. Campagnolo Super Record EPS 11s electronic components. Wheels would also be custom designed and built just for me.
This will never happen, but it sure would be nice.