the idea of unification you reference is more of a process of simplification, with an eye to creating additional explanatory value.
one of the best examples is that of the ptolemaic system of astronomy: prior to galileo speculating that the earth moved around the sun, everyone thought the earth was the center of the universe and that objects in the sky just naturally moved in non-linear spirals (epicycles) that needed endless corrections to be "correct". once galileo's system was applied, the complexity of making tons of extra corrections to track the path of some star was drastically reduced: these changes were now attributable to the earth's motion around the sun, and further the sun's motion in the galaxy.
you may be right that there is indeed an ultimate simplification, but nobody knows where the rabbit hole ends.
one of the best examples is that of the ptolemaic system of astronomy: prior to galileo speculating that the earth moved around the sun, everyone thought the earth was the center of the universe and that objects in the sky just naturally moved in non-linear spirals (epicycles) that needed endless corrections to be "correct". once galileo's system was applied, the complexity of making tons of extra corrections to track the path of some star was drastically reduced: these changes were now attributable to the earth's motion around the sun, and further the sun's motion in the galaxy.
you may be right that there is indeed an ultimate simplification, but nobody knows where the rabbit hole ends.