This addon consists of several QoL settings you can enable at your liking.

For example:

Era/Classic/Retail:

Auto repair
Auto sell junk
Clamp nameplates
Stack nameplates in instances
Easy fishing (right click), disable nameplates while fishing
Options to collect only specific mails (Gold, Auction house expired or won, Postmaster and Artisan's Consortium)
Disable tooltip in combat
Tooltip when hovering items in chat
Show ID for spells, items and npcs
Custom tooltip for players
Tooltip at cursor
Auto greed and accept loot warning (recipes etc excluded)
Show coordinates on world map en mini map
Adjust several blizzard frames (actionbar, etc)
Make most frames movable (saving location)
Skip movies
Clickable URLs
Show timers when in queue
Auto hide playerframe and sidebars with settings (Opacity and fade timer)
Hide objectivetracker and/or minimap depending on group status (solo/party/raid)
Change camera zoom
Change viewport
Set UI scale
Slashcommand /way adds a Blizzard waypoint if TomTom is not installed
Localization (enUS, ruRU)

Retail only:

Classic/Era only:

LazyHelper