Glad to hear that the title actually brings intrigue. I have mixed feeling when changed it because I think Svet brings more intrigue (I still occasionally referring Lume as Svet to my proofreader and confuse her lol. Guess it's habit)
About effort, I agree with you. Although it may seem unnecessary to others, I always do it like that to all of my stories
Spending hours finding perfect names for their personalities like parents naming newborn babies, setting the world like setting a new company, and a lot of behind the scene which may or may not captured by readers. For me, those are necessary (or maybe it's just my whole life hobby lol)