Do I understand this right that if the conjecture can be proved correct and the remaining issue about time gets solved we effectively have a grand unified theory?
There are two unifications that need to happen. One is the unification of the strong force with electro-weak force(the unified version of electromagnatic force and weak force). The other is gravity with the unification of the three forces.
As far as I understand, this work is concentrating on the second unification, and not the same. Though it might open the door for the first one too. Someone closer to this area should comment.