Easiest Follower Class (Keyclone)

[xandorz]

If I was gonna use a tank + 1 more I would probably go with warrior + druid.

With macros I think you can use something simple like this to have spammable dps buttons: (not sure exactly how to write it, just guessed)
/assist WarriorName
/cast [nostance] Cat Form
/cast [stance:2] AbilityName

Against mobs you could probably easily use attacks that attack from behind target by just going past them with warrior. Harder to do against players (although if you want to do that you can play the druid as the leader so you can position it easily)

Then maybe having Natural Shapeshifter and Furor might be good to make it less punishing to shapeshift, and use rejuvenation to heal. If you went feral you could get +3% crit aura and some more dps or if you go Nature's Swiftness you can get some quick heal. With Feral Charge it will be able to get on target good, interrupt and immobalize.

I am not sure how good it would be, but feels like a good 2 man team, especially when 1 character has to be a class that can tank.

You would also get the benefit of having 2 tank classes so can pick the one that you enjoy playing the most, instead of going for 1 and then regretting you didn't go with the other.