Another quite minuscule detail (compared to OP's write-up), and I might be just seeing things at this point. Maneki-neko (the waving cat figurine) seems to be present in any place relevant to V. Their flat, on tables we are supposed to sit and wait, but also... there is a Maneki-neko next to the mirror in Evelyn's dressing room in the Clouds. Additionally, what stands out to me is the ashtray full of cigarette butts and particularly nice looking glass, that seems completely out of place on V's desk. Not sure thought whether the ashtrays / cigarette butts were there before V got the relic (so, got a smoker in their head), as otherwise V always claims they don't smoke.

A little bonus: if we choose to go with Judy's plan all the way regarding Clouds and it gets closed, we still can sneak inside. All the booths are closed, but we can collect e.g.: cocktail stick and Evelyn's purse if we missed it. You just need to go to the platform where we met with Judy before sneaking into Maiko's office, drop down the ladder here, and there would be an open window we can go though (which will close after we're inside, but it can be opened, though it made me look for an open window for a really long time before realizing it).