I'm going to make some really off the wall speculative 'predictions'. That the strong interaction does have a 'dual' representation involving Gravity, and it does not
belong on the high energy scale, but the scale of large sizes, which is the natural province of Gravity. Simply put, people are looking in the wrong place and at the
wrong things. There are many, many things to be explained on the large scale, from the shapes of the Galaxies, to the types of Nebulae. How about the 'rings' around
SN1987a for example, or Solar Activity? Just look through any Astronomy catalog for more examples. Gravity and SU(3) have many more roles to play than people can
begin to imagine. How about the so called bi-polar nebulae around many stars? They fit nicely into a symmetry scheme that includes Gravity.