• Have Toriyama supervise it and write it.

• Add an explanation of why Gohan has lack of his mystic power. I can understand that Gohan hasn't trained or battled in a while in that timeline but at least please leave an explanation.

-If they wanted to bring Goku back as an adult, they shouldn't have just go on that long quest across the galaxy or universe, They should have just went to Planet Namek and wish it. Plus the shadow dragons would rarely even have to show up because it's a different set of dragon balls rather than the ones on earth.

• Why didn't Goten and Trunks use fusion when they fought super 17. I can imagine if they did, they'd put up at least a decent fight rather than just having to watch minutes of Vegeta getting back up and getting attacked by 17 over and over.

• Keeping Vegeta's hair back to how it was before. I remember a time Vegeta said where a pure blooded Saiyan's hair cannot change unless if it is grow facial hair.

-PICCOLO NOR DENDE DO NOT EXPLAIN THE BLACK STAR DRAGON BALLS AND THEY ARE NAMEKIANS FOR CRYING OUT LOUD.....sorry there got a little over in my head.

Edit: had to change some info I knew