So, the way that I understand it is that Hatred will still replenish all by itself, but now when you run out or low on hatred, you can replenish it even faster by using Hatred generating abilities.
What I don't like about this is that I don't think it will feel like a unique resource. It plays exactly like arcane power in my mind. Spend big abilities until resource is low, then use little abilities to get it back up. (only difference is that generating abilities make hatred regenerate faster, while the wizard arcane power simply does regenerate faster, you could just increase the regen rate of hatred and make generators cost 0 hatred and have the same play result)
Do we know if hatred is generated on cast? or if it is generated on hit? (from generator abilities)
-How do you think that hatred generating abilities should proc?
If it replenishes on hit, then what happens when you hit more than one target?
-Should hitting multiple targets with an ability generate hatred that many times faster?
-Should hitting barrels and other destructibles generate hatred?
This is how I think that it should work:
-Constant Hatred generation should be disabled while enemies are within X yards, and reinstated when there are no enemies near by.
-While in combat, it should act like fury only fluctuating down and up at a more dramatic rate. Hatred spenders should cost large amounts of hatred, while hatred generators should be free to proc on several enemies and refill the majority of your hatred hemisphere fairly quickly.
This system to me would compliment the Demon hunter play style very well. It allows them to start any combat off with powerful abilities (much like a wizard), but then quickly switches focus into a battle between going "all-in" (with spenders) and kiting (with generators), but if you are too actively running away (while kiting) you won't generate enough (or as much as in the "current" version) hatred because automatic hatred generation is turned off in combat.
PS. I know that the DH resource system is currently being redone, and there is a lot we don't know about it, but that doesn't have to keep us from discussion.
tl;dr version: DH passive hatred regen should be turned off in combat, making players rely on hatred generators.