Seems to have been reported here: Unique Idol Drop Rates - Idol Manager community - itch.io
That's about their drop rates in general? While I agree with that post, that's not exactly what Loacoon is talking about, right? If a modded unique idol's params.json doesn't mention a specific rarity, it shouldn't have a higher chance to spawn as a higher rarity, no? And if it has a minimum rarity, it should only have a chance to appear if the game normally would give you such a rarity to begin with. These are of course just my opinions, and I think you guys seem to share them? Would love to see more attention to how mods should/can behave from a player's perspective.