I'd also suggest that the following buffs always be displayed for all specs/classes:
Buffs on player — Bloodlust and equivalents- Ancient Hysteria (90355)
- Bloodlust (2825)
- Heroism (32182)
- Time Warp (80353)
Buffs on player — other- Hand of Protection (1022)
- Innervate (29166) — caster only
- Pain Suppression (33206)
- Power Infusion (10060) — caster only
- Unholy Frenzy (49016) — melee/ranged only
Debuffs on enemies — crowd control- Banish (710)
- Bind Elemental (76780)
- Cyclone (33786)
- Entangling Roots (339)
- Fear (5782)
- Freezing Trap (3355)
- Hex (51514)
- Hibernate (2637)
- Polymorph (118)
- Polymorph [Black Cat] (61305)
- Polymorph [Pig] (28272)
- Polymorph [Rabbit] (61721)
- Polymorph [Turkey] (61780)
- Polymorph [Turtle] (28271)
- Repentance (20066)
- Sap (6770)
- Seduction (6358)
- Shackle Undead (9484)
- Turn Evil (10326)
- Wyvern Sting (19386)