I dunno if there is a thread like this already but I wanted to put up a list of mods that get an HD look for the game, but have a strict following for Bethesda's original style for the game.
I'm of the belief that Skyrim has some nice culture to it, so it's a good idea to preserve that instead of adding brand new looks.

If you have stuff you want to Add to the list then write it below! Category suggestions are also welcome.


Clothing and Armor

Not Really HD Clothing: Retextures Clothing to higher definition (but not higher res) keeping the original feel. http://www.skyrimnexus.com/downloads/file.php?id=3315


Towns

Chris2012's Whiterun Texture Pack: Stays true to all the original design and makes Whiterun HD. http://www.skyrimnexus.com/downloads/file.php?id=114
Yuril Bumpy City Pack: Gives towns enhanced vanilla normal maps. http://www.skyrimnexus.com/downloads/file.php?id=5307


Furniture

Not Really HD - Glass Case: Better looking Glass Case. http://www.skyrimnexus.com/downloads/file.php?id=3693


Landscape

Enhanced Distant Terrain: Better looking LOD. http://www.skyrimnexus.com/downloads/file.php?id=1598
Kerplunk - Watery Rocks: Wet Rocks in rivers. http://www.skyrimnexus.com/downloads/file.php?id=4349
Terrain Bump: Enhanced vanilla normal maps for the wild. http://www.skyrimnexus.com/downloads/file.php?id=4964


Items

Potions and Alcohol:

Silly Level of Detail - Wine Cellar: Retextures all the wine and alcohol in the game. http://www.skyrimnexus.com/downloads/file.php?id=4260
Silly Level of Detail - Potions and Poisons: Retexes Potions and Poisons keeping the original style. http://skyrimnexus.com/downloads/file.php?id=4259

Misc Items:

Not Really HD - Claws: Retex For Dragon Claws to make them look less blocky for underused versions. http://www.skyrimnexus.com/downloads/file.php?id=3167
Not Really HD - Keys: Retex for Keys http://www.skyrimnexus.com/downloads/file.php?id=2875


If you have any other suggestions fo rthe list, write them below!

I suggest adding some that are recommended by this guide (STEP) http://www.skyrimnexus.com/downloads/file.php?id=11
Here are some of it that I consider really staying true to the vanilla feel and also some of my preferences

Weapons/Armor

Millenia Weapon Retexture Project - WRP http://www.skyrimnexus.com/downloads/file.php?id=1754
Accingite Vos - Shields HQ Retextures http://www.skyrimnexus.com/downloads/file.php?id=225

Creatures

Ultra High Definition Enhanced Vanilla Dragons http://www.skyrimnexus.com/downloads/file.php?id=4408
Bellyaches Animal Pack: Use Default Animal Replacement pack http://www.skyrimnexus.com/downloads/file.php?id=3621

Buildings/Environment

Spamheinzs HD Houses v1_6: http://www.skyrimnexus.com/downloads/file.php?id=994
Farmhouse and Villages vanilla based HD textures: has some textures that the above doesn't http://www.skyrimnexus.com/downloads/file.php?id=4306
TreesHD_Skyrim_Variation: Use textures only, the unnumbered textures http://www.skyrimnexus.com/downloads/file.php?id=3812

Ruins/Dungeons

Nordic ruin objects retexture http://www.skyrimnexus.com/downloads/file.php?id=4697
Nordic gate and lever retexture http://www.skyrimnexus.com/downloads/file.php?id=3814
Re-Defined Dungeons WIP http://www.skyrimnexus.com/downloads/file.php?id=3147

Clutter

HD Sacks Retexture: Improved textures of sacks, choose version A to retain Vanilla feel. http://www.skyrimnexus.com/downloads/file.php?id=2836
2K High Resolution Map - Mappa ad Alta Risoluzione http://www.skyrimnexus.com/downloads/file.php?id=3721
Burial urn retexture http://www.skyrimnexus.com/downloads/file.php?id=4100
HD Urns Retex http://www.skyrimnexus.com/downloads/file.php?id=3483

Map

High Quality 3D Map http://www.skyrimnexus.com/downloads/file.php?id=4817
A Quality World Map with Roads: Install over HQ3D map to make roads more visible. http://www.skyrimnexus.com/downloads/file.php?id=4929

LOD

Enhanced Distant Terrain http://www.skyrimnexus.com/downloads/file.php?id=1598
Enhanced Distant Trees http://www.skyrimnexus.com/downloads/file.php?id=3389

That's what I can add for now, I'll add more next time

NPC's:

http://skyrimnexus.com/downloads/file.php?id=2356