I also intend to maybe have a small Thanksgiving sidequest with a monstrous dire turkey and maybe some food monsters, as well as maybe add in a Christmas adventure with Santa, Frosty, and a gingerbread golem. That type of thing.
I'm not sure how to answer, tbh. I don't need near as much rational explanation as Eberron goes for. I'd consider Eberron as less gonzo than the "mostly medieval" option.How much zaniness can you enjoy?
I really like using fairy tale logic in dnd. My players are about to get their first real taste of that in a while in my Eberron game, which is normally more grounded and noir/pulp inspired. They're spending a day in the Nightwood in Karrnath, and the firbolg bard is about to meet some dryads that want his help, and have clues to the secret of his ancient heirloom greatsword.I kinda need my games/settings to have some kind of consistent internal logic, but I also don't necessarily need that logic to be realistic. Given my preferred D&D source material, I am generally aiming for a kind of fairy tale logic... sometimes more wholesome, and sometimes darker.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.