https://minecraft.curseforge.com/projects/furnus?gameCategorySlug=mc-mods&projectID=239336 This might be up your ally
It just adds a pulveriser and a furnace
If you're going for vanilla style, though, I have a few other mods I can recommend
Quark: Literally vanilla style additions
Hopper Ducts: Pipes
Better With Mods: An awesome vanilla-esk tech mod. It's a remake of Better With Wolves for modern versions of mc
Redstone Paste: Redstone that can go up walls
Rustic: Another nice vanilla expansion mod
Nether Chest: It's like a chest that can hold more. A nice alternative to iron chests
Familiar Fauna, Mystic World, Primative Mobs, and Elemental Creepers: All mob mods that compliment vanilla beautifully
Serene Seasons: A really cute season mod
Tough as Nails: If you're looking for a harder experience, then this adds temperature, thirst, and other mechanics that balance well with vanilla
Bullseye: More arrows
Wolf Armor and Storage: Armour on dogs is way cuter than it sounds
Charset: Not a single mod but rather a set of mods that all have really awesome utilities that balance well with vanilla
Roots: It's like a more lightweight witchery that also fits well with vanilla, (Though this one is a bit of a stretch)
Simple Ores: This adds ores which I know you said you don't want more world gen, but I'm throwing it in here anyway because it adds some nice ores which imo minecraft is lacking in anyway (The other addons for Simple Ores aren't updated yet, but when they do, snag those too.)
Enhanced Farming: adds some new crops that are really cool while not overwhelming like pams
Aether and Twilight Forest: Two dimension mods that might be a stretch for vanilla, but balance well with it anyway
Thaumcraft and Botania (I'm sure you know what those are, I've seen your tardis base tour. Awesome tour) They are also a bit of a stretch for vanilla, but also balance well with Aether, Twilight, and Vanilla
Hope these helped