Which Addons are necessary?

[BK2710]

All I can find are lists of collected working addons with so much shit I will never need (interace reworks like that lock one, who uses such crap?)

What I want to ask is which addons do I REALLY need for vanilla? (vanity like better map, mob hp, enemy casting bar)
PvP is my main interest but there is also that must have PvE ones so I suppose...
appreciated if someone wants to name some.

[Multispec]

Would recommend

Bongos hotbars for nice easy to modify hotbars

CCWatch timer for watching dot timers and CC, important in pvp.

Maybe some unitframes like X-perl unitframes

The only 3 I use, been thinking about a gather mod of some sort but ehh I'm lazy

[Esibelle]

I like Atlas, CEnemyCastBar, EquipCompare, MobHealth, SellValue. I also use DamageMeters but its not great, not sure if there is a better damage meter though.

Trying to find an addon for party member health and mana values.