That's the way to do it!
Between the Warrior and the Hunter you have two tanks (well, depending on the Hunter's pet). Rogue + Hunter for high damage dealing. Paladin + Druid for healing and buffs. Rogues and Druids are also able to control who you have to fight with Sap and Hibernate.
Winning combo
I haven't run an instance with my guild mates in a while (not much time).
Blackfathom Deeps was awesome (level 25-ish instance near the Zoram Strand in Ashenvale). It was me (rogue), a druid, and two Hunters. We also wiped some Horde outside of the instance on the way in.
Damn, I could talk about this game for hours. Back to work