Now, he should focus on this current reality and the current changes of the world. The fact that Time Crisis still happen shows that his plan was not wrong.
That there is a limit that he could change and there are certain events that would be hard to change.
At least now, Hirate would stop thinking of some horrendous plans to take control of the energy of the world for the elites.
The Multiversal Convergence now had made sure that those great powers no longer think of implementing such terrible plans upon the world population.
This is the small change that he could do.
Slowly changing, slowly throwing small pebbles into the calm lake, to let the waves keep continuing.
Now that the All Source had absorbed large volume of energy from the Otherworlds, this is no longer the case.
