>>534234262
>To be fair, he knew where the fuck Namek was in the first place, he'd really be shit at his job if he can't find New Namek despite being around when it was made.
I feel that could be excused. Kaio knew where Namek was, but he had it written down. Namekians were teleported to another, unknown planet, so it wouldn't be impossible for Kaio to not be capable of finding them, since the universe is huge and there are way too many planets out there.

>The part that guaranteed it couldn't work was the confirmation that Namek had Kami-worthy guys on it already. Before that point you could also bullshit 'Oh, they can't quite make the DBs work yet since Guru's lingering power left and they don't have anyone who could replace Kami to bring back Shenron yet, it would take like a century before little Dende grows up enough for the responsability!'.
And even that wouldn't work, because even if Mori is the only one in Namek who could make usable dragon balls, Earth doesn't need a new Kami, they only would need Porunga to resurrect Piccolo...