Quote Originally Posted by Jayngfet View Post
...and yet he couldn't just give them more water a few hundred years ago.

Though to be fair that technically wasn't the same Porunga. He was remade by another elder in the same way Shenron was by Dende. Being able to conjure up large quantities of matter probably made it into the design specs pretty early to nip future problems in the bud.

As for possible, lets keep in mind what other kinds of throwbacks there are. Tien is technically part alien himself, along with a bunch of other people. But he's the only one we ever see as a Triclops in the whole series. So following the same logic, there'd be as many Super Saiyans in the future as their are Triclops in the present. Meaning one at best. It's not perfect but it's a model we have to follow given no alternatives.

Though I think a good indicator is if Pan was ever born with a Tail. Since if she wasn't I'd imagine she's not considered a Saiyan primarily so much as a human.
Do we know if Goten or Trunks were born with tails? I don't remember ever seeing them with one.