Q u o t e: We've stated that only the Witch Doctor is planned to use mana at this point in time, if that clarifies anything for you.
As to what the Wizard and Monk may use, we've not said.
May I suggest a Blizzcast to introduce the systems you are working at the moment? I mean you did that with the Fury system, so why not?
You could do it about all 4 resources since Fury has changed to "endless" Fury and the demo video did not work at Blizzcon as it was supposed to, then about the Monk's and Wiz's which we do not know anything about and finally you could clarify if the WD's Mana will work as conventional D2 Mana or if it just has the name.
Q u o t e: On the wind a shout
The barbarian strikes down
Flesh renders from bone