Because they want to? Piccolo doesn't want to go into the Time Chamber with them and Buu is... well Buu, he'll probably spend the next 3 days being lazy.
Of course they'd
want to, but they could've simply wrote the show in a way they're off training somewhere else like with Whis unaware of the reconstruction, letting the others who actually
need it get their time training.
Goku and Vegeta are just so far up it's like... damn slow the hell down you two.
In the episode Vegeta says they're near their limits and won't get much stronger, so he's hesitant to go in at first.
Yeah this was a good note... but it'd still be much better to just give the chamber to say... Gohan and Piccolo
>_>
<_<
Or fine, Goten/Trunks to age them. Or Bulma and Vegeta to quickly push out a baby Bra.
3 more years of training for Goku/Vegeta is still just so crazy
If Gohan shows up ready to fight be nice if he has a cool new suit, we don't need another Goku like style or typical Vegeta/Saiyan style or even ol green beans style. Gohan needs his own distinct look.
No, that Kai look doesn't count either >:
Gohan even has a uniquely Gohan outfit that's the best outfit of series!
This is how you dress Gohan in Green