Galadriel. I like how unhinged and unlikable she was. It might be very at odds with her Third Age personality but I've always liked the more conflicted and Feanor-like versions of her found in earlier versions of the Legendarium. It's the ironic parallel that the darkness she saw in Feanor she was too proud to see in herself. Also, I just like the House of Finwe and their drama.
Numenor. It was by far the most gorgeously rendered and carefully designed setting in the show. I love the cracked and crumbling old, Elvish-influenced parts of the city and the hints of Valar worship. I like the existence of so many canals in the city, hinting at a people who wouldn't get off their boats if they can help it. Fitting for descendants of Earendil!