Seems like a basic build up until you get to Jagged Spikes. Why Jagged Spikes, you may ask? Because with a high damage bow and Archery, you can drop TONS of Caltrops and do an insane amount of damage, especially on packs that will chase you and won't give you much time to build Hatred.
tl;dr: Discipline can be used as a damage and escape dump, Hatred can be used as a damage dump. You have two resources to do damage from.
Level 53 Demon Hunter, absolutely flooring everything. And Jagged Spikes also doesn't seem to be effected by reflect damage.