DBS needs a verse wide scaling revision , a lot of the currently scaled characters who are tier 2 use completely bs scaling to held back Goku.
Future Trunks is not tier 2 until he unlocks rage mode, SS2 Goku held back against him and it’s evident the instant he goes on to fight base black on equal terms, the same black that shitstomped trunks effortlessly.
Gohan is not tier 2 throught all of DBS until he unlocks Ultimate again, piccolo makes a explicit point of him getting his old power back, makes 0 ******* sense if he was several times stronger than his Buu saga peak at that point, only argument for him being 2-C prior to that is a friendly spar with Goku, piss poor as it can get.
Gohan only becomes tier 2 after his training with Piccolo to Reawaken ultimate form and sparring with SSB /KK Goku.
Piccolo is only a threat to frost because the latter had already gotten his shit kicked in by SS1 Goku and even then he needed to employ special tactics to even have a chance against him, he is also not tier 2 until the ToP starts.
Krillin doesn’t scale to tier 2 period.