Repped everyone who responded to my question, I appreciate it. As for me, were I to change anything with this series:
Have Goku passing the torch to Gohan at the conclusion of the Cell Saga stick, letting Goku die and leaving him in Other World. Afterwards, i'd continue with Gohan as the main character throughout the Buu Saga, also ending it with him.
Goten and Kid Trunks would still be around however, playing some type of minor role, perhaps even still fusing into Gotenks and fighting Buu for a bit.
Z, as a series, ends there, and i'd move either into GT or Super. For either series, i'd retire Gohan as the main character and push Goten and Kid/Teen Trunks into the spotlight.
There are a lot of other, minor things i'd change as well, such as writing in ways for other characters besides Saiyans, namely Piccolo and Tien, to continue developing and increasing in strength, so that they could have solid roles in each arc as well. I might even give some of the characters their own mini-arcs too, in which they could really shine. While Goku would now be dead, i'd definitely have written an arc or two for him in Other World, with him meeting different fighters from the past, from all over the universe.
