Adding Zenith-Type weapons to other classes thru Boss Challenges

I was thinking about how a lot of fans would like to see zenith type weapons for the three other classes, and some fans would argue that at summoner class does have it's own with the terraprisma, but it's only obtainable through fighting EoL during the daytime, which a lot of fans would agree that it is a late-game/end-game kind of challenge

I think it would be really cool if other bosses did a similar kind of thing, Plantera has like this enraged mode when you go above ground right? What if that got turned into a challenge where if you go above ground, she becomes enranged and one shots you like EoL and defeating her while above ground the whole time gets you, for this example, a zenith magic weapon

and then for another boss like Duke, fight him outside of the ocean the whole time to get a zenith ranged weapon

I just thought about this on the spot, definitely needs more fleshing out but I think it'd be cool to have a reason to come back to some bosses in a later stage of progression for an endgame reward