All those suggestions i put in the comments in one disscussion.

Hey I've got a lot of (hopefully good) ideas for the features of this mod, so I'll just list them down here and hope you like them. Sorry if this takes up like 38 pages of comments.

1 - My ideas for Ship A.I.s:
Saiyans: Either an Oozaru, a fake King Vegeta (as in Trunks grandpa), or a hijacked version of the vanilla ship A.I.s
Namekians: Either a snail, (because their slug-people), a fake/copy of Guru, or one of the dragonball-dragons. (Probably Porunga)
Frost Demons (Freeza's race): No ideas for these guys. Maybe fake King Cold?
Kais: Either one of the Angels from DBS, or one of those Ogres that worked in Hell in the DBZ filler.
Majins: Again, not sure for these guys. Maybe Bibbidi/Bobbidy?

2 - My ideas for the Ships themselves:
Saiyans: Either a hijacked version of one of the vanilla ships, or share one with the Frost Demons.
Frost Demons: Easy. Just use the Freeza Force ships from DBZ/S.
Namekians: Again, easy. Just use Kami's ship from DBZ.
Kais: Not sure. Maybe the cube transporters Berrus used in DBS to bring everyone to the universe 6v7 tournament?
Majins: Again, not sure. Maybe Babidi's ship from the beginning of the Buu Saga?

3 - Training:
I think instead of this mod's races being naturally stronger than others, they should earn their strength through training.

How to train:
When you go to the Outpost,there is a small room on the underside. I think this mod should have it so that in said room, there is some one down there, either Goku or Master Roshi. When you talk to them at first, they would tell you a short story, (blah blah Lived on Earth long ago, blah blah Incredibly strong, blah blah Can teach you how to get that strong yourself.) and offer to teach you how to get as strong as/stronger than they were at their prime, if you can prove yourself. You would do this either bring them some good food, or something to do with women, depending on who it is under the outpost. After that, they would teach you how to build/trade for your own training equipment. After you get the equipment, you would just interact with it, and some sort of Training/Strength stat would increase. Here are some ideas to stop people from just spamming E on the equipment and getting ludicrously strong:

A: Some sort of fatigue de-buff you'd get whenever you use the equipment that would make it so you can't use the equipment.
B: The equipment breaks down after some amount of time, forcing you to get/make more.
C: After your Strength stat gets to a certain point, the equipment doesn't work anymore, and you have to upgrade it/get better equipment.

4 - How you get skills:
After your Strength stat reaches a certain point, you could go down to the hole in the bottom of the Outpost, and Goku/Roshi would teach you new abilities, like ki blasts, flight, the SS transformation(s), ect.

5 - Who can train?:
I'd say that any race would be able to train, get stronger, etc., but all the races not from this mod would have a cap on their Strength stat, while this mod's races would either have a very high cap, or no cap at all.

Other suggestions:
Maby as the Strength stat increases, the sprite for the un-clothed player would change, going from the normal, kind of chubby sprite, to a thinner sprite, to a somewhat muscular sprite, etc.