Ret Pallies actually got a buff from Seal of Command (hit 2 targets if activated but not all skills) then equip it with Glyph of Seal of Command to get extra 8% mana back plus 25% from Judgement of the Wise every Judgement spell.

With regards to new team I would suggest not having pally and shaman since you already have those. Instead go for a team than can easily switch to long range DPS for raids or battlegrounds.

Druid (BearTank[5man] & DPSMoonkin[raids] )
Mage
Warlock
Hunter
Priest (Heals[5man] & DPSShadow[raids])


Or go melee
Warrior
Enhancement Shaman
DK
Rogue
Priest


Go mix team to optimize buffs!