Okay well I'm going to be completely honest with everyone here. There is no possible way that Goku can win. Against the fallen and cabal? Maybe. But the hive and vex are way to powerful. Crota, as stated on the Grimoire card, can destroy, create, and reshape universes with his power. Take note he is one of the weakest Hive Gods. The Vex have transcended time and love outside of it. What would be trillions of years would be less than an Attosecond in our time. They can manipulate entire time lines to the point that Goku simply can't fight them. They can erase him from existence by altering the timeline. How was Atheon, Crota, and now Oryx able to be killed by Guardians then? Well, bad case of storyline and plot armor. Even then, guardians only won because of Kabr's relic. The ammount of power the upper class destiny entities have is crazy.