WoW Rage as a liability

Rage is a problematic mechanic, and has been since its implementation. It can be a lot of fun, but it can also be frustrating, and it contributes to Warriors' gear dependance. Blizzard is probably working on a way to redo rage entirely, but in the mean time, I'd like to highlight this suggestion for a rage revamp from Alveredus, a commenter on a recent post of mine.

Here's a quick rundown of Alveredus's proposal:

Rage increases over time by itself. The more rage you have, the lower your attack speed, but the higher your crit chance. When your rage is at maximum, you start losing resilience. Your abilities vent rage instead of costing rage - same thing really, but a different way of looking at it. I'm not certain about the specifics of it, but I like the general idea of rage being something you want to get rid of instead of something you want to spend. It makes sense: being in combat makes you angry; when angry, you may be less accurate, more vulnerable, or generally imbalanced.

On the other hand, a system like this runs the risk of feeling like Rogue energy with a penalty. Rogues get their resource back at a constant rate and use it on abilities, but nothing bad happens to them when they cap their energy (aside from losing out on some potential DPS). The comparison could feel unfair for Warriors, who already have their share of penalties for core abilities. But rage definitely could use some work, and I'd like it to stay an interesting mechanic.