I definitely think there's going to be something involving Gohan, if not in this arc I'd at least like to see an arc where they'd visit a universe close to the one we know but where Gohan had to take up the mantle of defending Earth cause Goku decided to not ever come back.
So after the Cell saga instead of falling off, Gohan would train with Vegeta and that Vegeta would push Gohan like crazy and teach him to not hold back and to always keep his guard up. Gohan would learn to strike to finish the fights as soon as possible, instead of toying with his opponent like the first time he went SS2, and he would realize each battle for Earth could result in losing everyone he ever loved or cared for if he wasn't serious from the get go.
A bit fan fiction-y I guess but still woudn't be that far of a stretch, idk it would just be really neat to see a Gohan who never stopped his training, went through all the trials his father faced and then ended up facing off against his Universes God of Destruction. Imagine the surprise of seeing his dad again after all those years when the two universes meet haha.