8. Magic fairy dust in the harpies’ nest is a relic from TW2. Needs to go.
I found that somewhat fitting with that particular situation, to be honest.
A harpies', or in this case, a crow's nest usually contains glittery, shiny things and the flask or bottle holding Johnny's voice looked to be made of some kind of polished brass or gold even. So the nest eminating a little bit of sparkly, fairy-dusty shine didn't sit that wrong with me.
It's probably just occuring for important quest items anyway, and maybe can be turned on or off via a corresponding option as well.
16. Why are there so many candles, bonfires, etc, lit in broad daylight?
Because that's what's usually associated with (medieval) pagan or wiccan traditions. Cauldrons, daggers, sickles, concoctions, animal intestines, sacrifices, lots, lots of candles and ritual fires for burning incense, the list goes on. I think the time of day is of little or no consequence in this regard, although certain rituals (involving candles, fires, etc) are supposed to work only under a full moon and things like that. I'm no expert obviously, I've just watched too many terribad movies.
It probably just happened to be broad daylight when this particular walkthrough of the 'Ladies of the Wood' quest chain was recorded. Maybe the time of day doesn't play that big of a role in the finished game and you can pretty much tackle quests any time you want. Didn't Peter Gelencser mention that you basically can confront the Werewolf at dawn or at noon as well, and that it would be advisable even to do so, since a Werewolf isn't able to 'morph boost' under the Sun?