I'm probably going to watch"Endgame" again tonight in a few minutes, and just finished with "Dark Frontier". I usually skip "Unimatrix Zero". All I'll say is I thought it appropriate that they managed to grab Alice Krige to bookend the Queen she created.
She was already trying to cope with the sexual dynamics being different from her earlier seductive interpretation with Data and Picard. One of the producers told her to think of the Queen as Omni-sexual, and that apparently clicked for her. That was her challenge for the performance, and the TV pace was probably a lot faster than her filmed Trek experience.
I liked seeing Alice back, partly because I first noticed her name in the 1981 film Ghost Story