The main palace was mostly offices, servants quarters, and general patrol areas for the guards to be ready at need. While Immortals were like rain drops at the moment, the peak Sun Tiers were currently getting closer for a new wave of Immortals to come in the next decade or so.
Lind's own wives, after they recovered from their pregnancies, made it their goal to reach Immortality but Lysanna had gotten pregnant again suddenly so they focused on her. Thankfully, all their foundations were profound so their recovery would be fairly quick and efficient.
As they moved deeper into the palace, the feeling of the halls changed. Where the outer halls felt cold with the dark stone and tapestries hung to show the history of the Sanctuary Empire and Lind in particular.