Beat the game. I know there's a ton of post game content, but I'm burned out.
They probably should have had a greater focus on including lots of minor manga and anime-only characters rather than hundreds of generics.
The whole race mechanic with aliens, nameks, humans, saiyans, and majins really didn't amount to much, so the need to have a bunch of generics in place to balance the pools out wouldn't have made a difference, but there were still tons of omissions they made.
For instance - Bardock's entire crew, Paragus, Tarble as saiyans. Nameks could have added Slug, Dende, Cargo, Moori, Kami, and Tsuno, and the mutant nameks. They had a dozen kais they could have included, as well as characters from the otherworld tournament arc, many movie characters (primary and secondary antagonists), baba's fighters, roshi, ox king, chi chi, bulma, the tenkiaichi budokai participants, members of the red ribbon army, shadow dragons and other GT characters, babidi and most of his henchmen, super buu, many of frieza's henchmen ...
AND WHERE WAS JACKIE CHUN?!?!!