ArenaNet:Skill feedback/Mesmer/Power Block

A fire and forget interrupt that makes it too easy to shut down any player relying on 1+ spells (mainly Elementalists). Remove the ability to bypass effects that prevent interrupts.
 * Issue
 * Suggestion #1
 * Elite Spell. Interrupts a spell or chant. Interruption effect: that skill and skills of its attribute are disabled for target foe.
 * 15 1/4  20

(Rework)
 * Suggestion #2
 * Elite Hex Spell. Interrupts a spell or chant. Interruption effect: all spells have 50% failure chance (4...9...10 seconds).
 * 10 1/4  20
 * Elite Hex Spell. Interrupts a spell or chant. Interruption effect: Target foe's next spells fail (6 seconds).
 * 10 1/4  15