But after his wish to Shenron granted him the orange form in Piccolo is now a force to be reckoned with again and a character who should be capable of earning Frieza's full attention in a fight.

Source: https://screenrant.com/dragon-ball-orange-piccolo-black-frieza-fight/

Shenron obviously respects and reveres Piccolo, so there's a possibility that the eternal dragon would have refused to upgrade Krillin and Gohan.

Source: https://screenrant.com/dragon-ball-kirllin-denied-super-hero-powerup-explained/

The filmed special showed fans a dazzling drone show that summoned Shenron and previewed a real-world fusion.

Source: https://comicbook.com/anime/news/dragon-ball-legends-goku-shenron-drone-show/