I keep an living list of stuff that I find useful for M+ for my guild and I figure other people can probably benefit from it too.
Bare Minimum
- Boss Mods (Choose One)
- Good Nameplates [that help you quickly identify priority targets] (Choose One)
- WeakAuras: https://www.curseforge.com/wow/addons/weakauras-2
Good to Have
- OmniCD: https://www.curseforge.com/wow/addons/omnicd
- CDs on Nameplates: https://wago.io/LyVvlKxvs
- M+ Timer: https://wago.io/M+Timer
Affix Specific
- DF Affix Timers: https://wago.io/S2Affixes
- Strongly recommend following the on-page instructions to add sounds to them.
- Rolling Quaking Timer: https://wago.io/Hq_CGhwKr
- Quaking Sound: https://wago.io/N-_a8Ujst
- Spiteful Fixate: https://wago.io/hMx86FIwg
Dungeon Specific
S3
- All
- FD/Vanish/Invis/Meld: https://wago.io/yQd0o-lhO
S2
- VP
- Asaad - Static Cling: https://wago.io/-X1GFF3R4/
S1
- CoS
- CoS Helper: https://wago.io/hke42iGI6
- HoV
- Odyn Rune Map: https://wago.io/RunicBrandHelper
- RLP
- Kyrakka - Wind Direction: https://wago.io/ojLc0v3H5
- TJS
- Wise Mari - Corrupted Geyser: https://wago.io/8euMch-gQ/
Planning & Management
- Raider IO: https://www.curseforge.com/wow/addons/raiderio
- Mythic Dungeon Tools: https://www.curseforge.com/wow/addons/mythic-dungeon-tools
- Standard Pug Routes: https://raider.io/news?tag=weekly-route
- Premade Groups Filter: https://www.curseforge.com/wow/addons/premade-groups-filter
- Astral Keys: https://www.curseforge.com/wow/addons/astral-keys
- Angry Keystones: https://www.curseforge.com/wow/addons/angry-keystones