I should add that while I listed my top five, I have at least thirty that contribute so greatly to my game experience that I consider them crucial. So, in keeping with the spirit, if not the name, of this topic, in no particular here are my NEXT 25, to add to the five I listed above:
- Skyforge Shields
- Winter Cloaks and Hoods
- Bound Sword skill fix
- Alternate Start--Live Another Life
- Auto-Unequip Ammo
- Enhanced High-Level Gameplay
- Racial Bonus in Description ('cause I start a lot of new characters)
- Better Quest Objections (goes with . . . )
- Simple Compass (removes everything but directions and hostile markers from compass and all quest stuff from map, hence need for more descriptive quest objectives)
- J.Hco's Scottish Pound Mod (okay, not really crucial, but the most amusing one on here)
- Purchasable Jarrin Root (a must for any serious assassin, and gets rid of all your "I have too much money" problems)
- Night Eye Overhaul (the vanilla version is more of a handicap than a special ability)
- Thieves Guild -- No Autostart
- Revised Potion Weights
- Unlimited Bookshelves (oh, forgot about this one! Should be one of top five)
- Alchemy Ingredient Storage (ditto)
- Complete Skyforge
- Lost Art of the Blacksmith
- More Craftables
- Complete Crafting Overhaul
- Val's Crafting Meltdown (outdated, but still best one of this ilk)
- Quality World Map
- Race Menu
- Birds and Flocks
- Ultimate Follower Overhaul
Also a lot of texture, light, and color enhancers. I'm constantly trying new ones of these, so hard to list.