"A normal rotation should not starve you, but it instead is used to put a limiter on how much burst potential you can maintain before you starve."
This is not how the warrior class works.
My other comments about specific rotations and stuff were directed at the guy who posted a dumb rotation ignoring both the passive energy regens within the trees he was referring to. RB builder X3 >Rb Finisher shouldn't starve you at even relatively low levels of crit (Without o-GCDs). Unless you start aoeing, which seems to be fine. You may be thinking of some of the riftblade talents that use energy but don't return it on crit, like fiery burst and rift surge.
Riftblade is our most bursty tree, you're right. However it's cooldowns are such that it's dps remains fairly constant. That's what I was referring to by burst. Fiery burst has burst in the name, and it's probably one of our least burst-like skills that we have, don't take everything so literally.