I'm not sure if all the mods i'm using are on the Workshop, personally i'm sticking with Nexus, but i'll list them anyway.
A Quality World MapDetailed world map with visible roads and highways. Good for navigating.
Alternate Sun GlareSlightly different sun glare, not so much in your face.
Better SortingMakes going through your inventory so much easier, changes things like 'Iron Arrow' to 'Arrow - Iron', 'Potion of Healing' to 'Restore Health - II' etc.
Categorized Favorites MenuThis mod is one of the best imo, expands the favourites menu with subcategories: Magic, Potions, Shouts etc. Also includes "Equip sets" for equipping different sets of favorited items. This might help your hotkey problems Sathias
Complete Crafting OverhaulAdds all missing gear & crafting recipes, make arrows & faction gear, complete rebalance. Is good.
Enhanced Blood TexturesMuch better detailed blood textures and decals. Must have for melee imo.
Enhanced Distant TerrainReally small mod, adds noise to distant terrain texture maps, looks much better.
Lush GrassMakes grass look more dense & full, doesn't impact performance either.
Lush TreesMakes forests more dense by adding extra branches and needles to pine trees.
Realistic Ragdolls and ForceSelf explanatory, much better ragdoll physics, no more catapulting bears from an arrow.
Realistic Water Textures and TerrainThis is a really nice mod, water looks a lot better everywhere, oceans, rivers, lakes, waterfalls, foam, rain, ripples etc.
Smithing Perks OverhaulSmithing perk fixes for item materials, it's part of the Complete Crafting Overhaul mod pack.
Static Mesh Improvement ModBetter 3D models & textures for the smaller things like clutter, furniture and landscape objects.
Wars in SkyrimAdds more random encounters, quicker respawns, new enemies and factions, more challenging NPC's. I was getting bored post level-40 even on Master difficulty, this mod changed that.
Weapons and Armor FixesEssential mod, fixes over a thousand incorrect weapon & armour properties.