I posted about the dailies I was doing and some of the time-saving tips I use in this thread a while back. Some helpful people even suggested some improvements.

It was when my toons were still "young", but the quest info is still relevant.

Maximizing Northrend Dailies Thread

For the last month or so I've streamlined the entire list a bit - I just do the three dailies at Shadow Vault then all the ones from the flying ship except for Slay them All (PvP = the suck), That's Abominable (too many problems not getting credit on the explosions), and the two near No Rest for the Wicked - the writhing mass one and the summon a voidwalker spy one (those two just take a bit too much time now that I have multiple teams and can just repeat the easier ones instead). I also pick up and complete Assault by Ground while cruising around. This smaller list takes the best (fastest and least buggy) quests and still nets over 750g per team.