http://www.stijndp.be/online/wow/Cel...dbuffer1.2.zip
Made an app to help myself find missing buff/debuffs quickly. Activate which members are mostly there (or which classes you meet most in LFD) and then you can quickly see which buff/debuffs will be missing.
For LFD most obvious choices are the 4buffs we can bring and 1debuff
Melee haste => hyena/serpent
Spell haste => sporebat
Crit => Hydra/Wolf
Mastery => Cat
Spell damage => Dragon hawk/Wind serpent
There's an exception for Wind Lord where the Tallstrider is very good for aoe armor debuff if you don't have a warrior/bear tank.