I feel pretty satisfied with the anime.
the production told a story that fit within a cour, and ended at a good place, with few loose ends.
Yume is still in love with Mitzuo
Mitzuo is still in love with Ayai (who Yume used to be)
Yume is determined to win Mitzuo from her 'old self'
yea, it's more complicated than that in the LN, and even if events diverge from this point going forward - I feel the Anime stands on it's own