While the ice palace is beautiful, it is pretty hollow. If it were up to me, I would have added some statues of the people who Elsa gives importance to in her life. She's so starved of affection and so deathly afraid of what could happen, that she would rather build sculptures and embrace them for comfort.
Giving it a quality similar to a shrine, or a museum if you will.
Also after her fight/arguement with Anna, the scuptures start to crack and jagged icicles emerge from them, and Elsa feels hopeless










