Perhaps they were purified on death like the Digimon Frontier villains. Ironically Fish Eye, whose original series counterpart had the most drawn out redemption arc of the three, is the least sympathetic in Eternal. Hawk's Eye being the most, of course. He really did have no grudge against Sailor Jupiter and they shared the same dream. They could have been friends if they weren't enemies, and as you mention, his final words to her.
Side note, there is a character in Zelda: Breath of the Wild who is the opposite of Hawk's Eye - he is a man who wants to realize his dream of becoming a bird.
Both versions of Wiseman are in my top 10 anime main villain deaths for sure (as 8 and 7, and given my taste in anime there are a lot of those to list, unlike most modern day anime fans who would only list the JoJo and DBZ villains and Zeref, with Dio at the top), partly for the song in original series original dub and spectacular explosion in Crystal, but also for how evil they were (both of them exploiting Chibiusa the way they do) and what a big threat, wanting to destroy the whole world, and in Crystal's case, Wiseman massacred everyone in Crystal Tokyo, or at least enabled Demande to do so. (Though, between the amazing final battle sequence and her original series counterpart surviving, Crystal/Eternal's Nehelenia is higher, at number three, first two being Frieza and Myotismon. The only ones between the Wisemen and Nehelenia in this case, 6 and 5 are rainbowfied and 4 was a long-running villain who ruined most of the protagonists' lives and was destroyed in the rare outline effect also played with Koan btw. Besides, the tragedy of Silver Millennium traces back to her)