These are unrelated to the previous 3 chapters request or each other except for the indented ones beneath them.

1. What if Goku, Gohan & Piccolo trained on Yardrat for Android Saga?

1.1. Gohan regrew his tail on the way to Namek but kept it hidden.

1.2. Gohan turned SSJ on Yardrat & got control of his ape form.

1.3. Goku taught Gohan Kaio-ken & Spirit Bomb.

1.4. He turned SSJ2 in the time chamber.

1.5. Goku frees the Androids from Cell during their match.

1.6. Imperfect Cell self-destructs killing Goku & King Kai but that leads Gohan to become SSJ3.

1.7. Gohan SSJ3 Great Ape with Cloning & Gigantification against Super Perfect Cell.

1.8. Gohan kept training in his free time when he wasn't studying & became SSJ4 during the 7 years of peace.

1.9. He taught all the Z-fighters Kaio-ken, Spirit Bomb & Spirit Control.

1.10. Gohan showed Videl all his techniques in the room of Spirit & Time while training for the Tournament, including the Special Beam Cannon. She learned all but Spirit Control, Kaio-ken & Spirit Bomb.

1.11. He split Buu into Fat Buu, Evil Buu, Grand Supreme Kai & South Supreme Kai.

1.12. Evil Buu escapes & becomes Kid Buu later, but Gohan still gets his potential unleashed.

1.13. Gohan learns fusion & teaches it to the Z-fighters.

1.14. Gohan has the Elder Kai unleash the Z-fighters', including Videl's, potential

1.15. Gained SSJ5 before Beerus came to Earth.

1.16. Gohan goes into perfected SSB after the God Ritual, early into his fight with Beerus.

2. What if Gohan & Chi-Chi went into space to explore the Academics & Martial Arts of different cultures, namely Yardrat & Metamor, for a year during the 7 years of peace?

3. What if Kami & King Piccolo never split?

3.1. He was stated by the Grand Elder to be stronger than a Super Saiyan, so he'd be about Android 18's level in power.

3.2. REMEMBER: Piccolo Jr. isn't King Piccolo, so the original should be stronger than Piccolo Jr & Kami fusing.

3.3. Black Star Dragon Balls could be major.

4. What if Gohan & Piccolo trained with Whis & Beerus once & figured out UI & UE on their own by building on what they taught them on their own?

5. What if Gohan kept the Potara Kibito made for him?

6. What if DBZ Paragus met DBS Paragus while plotting his revenge against Vegeta?

7. What if Gohan married Videl & Erase?

8. What if Beerus rescued the Supreme Kais from Buu & Bibidi?

9. What if Beerus never sealed Old Kai away?

9.1. More competent Shin since his masters would've been fully trained.

10. What if Dr. Lychee & Dr. Myuu worked together?

11. What if King Cold, Cooler, Abo, Kado & the Ginyu Force, including Bonyu, went to Namek with Frieza?

11.1. The Force could bust out the 5, possible 6,-way fusion against the heroes.

12. What if Cooler & Bonyu went to Earth with King Cold & Frieza?

13. What if the Z-fighters systematically hunt the dragon balls as soon as they can be used, so no one could use the wishes for evil?

13.1. Bulma mass produced scouters for communication & radar, both dragon & regular, purposes? track androids?

14. Yamoshi could telepathically communicate with his descendants, Goku & Vegeta, after they become Super Saiyans?

15. Dr. Myuu created Hell Fighter 18, too?

16. Present Cell survived Trunks & Krillin destroying the lab?

17. No Saiyans lost their tales, but learned to control their Ape form instead?

18. Dr. Gero released all his remaining Androids upon his death?