After Guru has unlocked Krillin's potential, he feels awfully confident and moves around on Namek without
trying to hide his chi. In the scene where, in canon, the paths of Krillin/Vegeta/Zarbon intersect, Vegeta
is awed at Krillin's chi and decides to stay hidden. Zarbon, who has no scouter, brainlessly attacks Krillin
and gets killed. When Gohan shows up, Krillin tells him that they're going to Guru to unlock his own
potential as well.
Vegeta's like: 'So that's how he increased his powers so much' and decides to go to Guru's and force him to
unlock his potential. Since there are only three Nameks left, he finds the house fast and arrives there
before Krillin/Gohan. He challenges Nail and gets killed.
Gohan's potential is unlocked. By the time Goku has arrived, Ginyus and Freeza are all dead (Gohan is not
as merciful as Goku, so he killed Ginyu without giving him the chance to try Body Swap). They use the
dragonballs' wishes to put everything back to normal and return to Earth.
Goku dies of the heart virus. Androids show up and get killed by Gohan. Goku stays dead. 7 years later,
Dabura is killed. After that, there are two paths...
1. Beerus does not awaken.
Beerus not awakening means no BOG/U6 Sagas. No U6 Saga means no Zamasu/TOP Sagas. No FNF Saga either,
since Cold is still alive and his empire hasn't collapsed.
2. Beerus awakens.
Gohan becomes Whisses student and unlocks SSJ Blue. He takes part in U6 Saga, where he solos, regardless
which the other 4 participants from U7 are, unless he goes SSJ Blue against Cabba like Vegeta did in canon.
Zamasu takes Gohan's body. Even if Bulma makes a time machine, with no allies of Gohan's caliber, the
Zero Mortal Plan succeeds.