MysteriousQoL is a personal World of Warcraft addon (Retail) with independently toggleable quality-of-life features. Open settings with /mqol or click the minimap button.

General

Automation

AH: Current Expansion Only - automatically enables the Current Expansion filter when opening the Auction House.
Auto-Accept Quests - automatically accepts quests from NPCs. Hold Alt to bypass.
Auto-Select Gossip - automatically selects the gossip option when an NPC only has one. Hold Alt to bypass.
Auto-Slot Keystone - automatically places your Mythic+ keystone when the Challenge Mode frame opens.
Auto Turn-In Quests - automatically turns in completed quests. Only auto-selects reward if there is one or no choice. Hold Alt to bypass.
Skip Queue Confirm - auto-clicks Sign Up in the group finder application dialog. Hold Ctrl to see the dialog.

Camera

Max Camera Distance - sets camera distance to maximum (2.6x zoom out) on login.

Loot

Easy Item Destroy - auto-fills the DELETE confirmation text so you can just click the button.
Faster Auto-Loot - rapidly loots all items instead of waiting for the default loot animation.
Suppress Loot Warnings - auto-confirms bind-on-pickup, loot roll, and trade timer removal dialogs.

Vendor

Auto Repair - automatically repairs all equipment when visiting a merchant. Optionally uses guild bank funds. Hold Shift to skip.
Auto Sell Greys - automatically sells all grey (Poor quality) items when visiting a merchant. Hold Shift to skip.

UI

Chat Copy Button - adds a small copy button to each chat frame. Click to open a window with selectable, copyable chat text.
Hide Alert Popups - hides achievement, loot, and other alert notifications.
Hide Error Messages - hides the red UI error text (e.g. "You don't have a pet.", "Out of range.", "Spell is not ready yet.").
Hide Event Toasts - hides event notifications.
Hide Social Button - hides the Quick Join toast button near the minimap.
Hide Talking Head - hides the NPC talking head dialog frame.
Hide Zone Text - hides the zone name popup when entering a new area.
Minimap Button - toggleable minimap button. Left-click opens settings, right-click opens a menu, drag to reposition. Auto-swaps to a pride icon during June.
Mouse Ring - configurable ring around your cursor. Options: size, class color, hide center dot, only in combat, only on right-click, cast progress.
Skyriding Vigor Tracker - shows a vigor charge bar and speed display while skyriding. Options for Second Wind overlay, Whirling Surge cooldown, speed text, and auto-hide when full and grounded.

Reminders

Class Buff Reminder - pulsing icon when your class buff is missing from you or any group member. Suppressed while dead, mounted, flying, in a vehicle, or on a taxi.
Cheat Death Reminder - plays a sound when Purgatory, Cheat Death, Cauterize, or Last Resort saves you. Only active in combat inside an instance.
Don't Release Reminder - large bouncing warning when you die in a raid instance to prevent accidental release.
Imbued Mulch Reminder - bouncing warning when you start herbing and Imbued Mulch is in your bags and off cooldown. Never shows inside instances.
Mail Reminder - plays a sound on initial login if you have unread mail.
No Pet Reminder - bouncing warning when you have no active pet (Warlock, Hunter BM/Survival, Unholy DK). Detects Grimoire of Sacrifice and no-pet talents.
No Pet Sound - plays a random baby murloc sound when you try to cast a pet ability without an active pet (e.g. Kill Command).
Overload Reminder - bouncing warning when you start mining or herbing with Overload off cooldown. Never shows inside instances.
Pet Idle Reminder - bouncing warning when your pet is alive but not attacking while you are in combat.
Repair Reminder - bouncing warning when any equipped gear drops to 50% durability.

Fun

All fun sounds have a configurable audio channel (Master, SFX, Music, Ambience, Dialog).

Batman Teleport Sound - plays the Batman theme when you zone in via hearthstone, mage portal, or toy.
Blink Sound - plays a DBZ sound on Blink/Shimmer (Mage) or Shift (Demon Hunter).
Bloodlust Sound - plays a sound when Bloodlust/Heroism/Time Warp or equivalent is applied. Sound choice configurable (R2-D2 or Wei).
Owen Wilson Loot Sounds - plays a random Owen Wilson "wow" clip when a loot window opens.
Roll Sound - plays a random sound on Roll or Chi Torpedo (Monk).
Stealth Sound - plays a sound on Stealth (Rogue) or Prowl (Druid).
Vendor Sound - plays a money sound when grey items are sold.
Zoomies Sound - plays a sound on major speed abilities: Aspect of the Cheetah, Dash, Divine Steed, Burning Rush. Individual spells toggleable.