Absolutely and utterly hate all the collection quests my shammy/pally team had to do.

Just about anything as an alternative is better.

Pure grinding all the way is probably the only thing worse.
If there was an option to grind on level 90 mobs, with level 100's supporting me....
That would be very attractive.

The number of collections, which open kills, is horrendous in Northrend.
It sometimes takes 90 minutes of grinding on mobs, to get 12 drops (which is actually 60 drops).
Fifteen minutes of grinding is tolerable with one toon; 90 minutes plain sucks.
And that's not an isolated incident.
Sure there are plenty, where everyone can loot, and kill quests too, or Fed Ex quests.
But there are numerous collections which are so monotonous.
Especially after having done them with 4 solo toons and a boxed team.