With Rings of Power, I'm thinking that Galadriel-Halbrand could have worked better with the audience if they were written as totally different characters.
Both would have to have a mixture of attractive, impressive, but also dangerous and questionable traits, with more (and unrequited) sexual tension. And somehow the opposites attract, like yin and yang. If Halbrand was well liked and ended up being Sauron it would be interesting to see people's reaction. This would be a "Luke I am your father" moment LOL.
Halbrand is easier, the swashbuckler and humorous/trickster element would be essential.
Instead of being a miserable Byronic heroine, Galadriel could have written as a something likeable/original while still being loyal to Tolkien. Feminine but also masculine. Beautiful, graceful but also potential for misplaced, dangerous acts.
Kind of like a superheroine who is not in full control of her powers but is driven forward by her task of loving and saving her people (not revenge but duty tinged with pride and desire for power). Wise but flawed, and as events happen she grows wiser.
The 50 hours of show should change her into the mature and retired Galadriel of the Fellowship of the Ring.
It's too bad as both actors for Halbrand/Galadriel are competent and look the part (mostly- Galadriel is much too short) but they have been ill-done by the bad writing.
Episode 6 and 7 are where Amazon spent a lot of their money. Episode 6 is going to be a big battle episode.