But as a skill, it doesn't offer any utility. Scramble, on the other hand, offers a solution for archon's biggest weakness- a lack of mobility. It buffs movement speed by 25%, making a wizard with scramble active faster than a barbarian with wotb active (but not sprint).
Last night, I was doing some a1 mp10 with a party of barbs and a monk and was struggling to keep up, so I gave it a shot. Actually, I was so afraid at what it'd do to my survivability that I was considering not using glass cannon, or using unstable anomaly. Ended up picking blur, which in itself was probably unnecessary.
Survivability wasn't an issue in the slightest. Did a full fw-wh-fom comfortably without ever even coming close to death. My defenses on gear are decent, but they're certainly not anything insane like no-ls Jaetch-level. With 650k EHP buffed, I could survive a molten explosion and a savage beast charge without much trouble.
For an end-game archon wizard, damage output likely won't be the bottleneck in farming efficiency, not even on MP10. And survivability won't be an issue at all either, making pinpoint barrier somewhat moot. I'd contend that the movement speed buff would allow one to ultimately kill things quicker.
The sheet DPS reduction for me in dropping the crit chance from pb is about 6%. Not too shabby, and definitely a much smaller sacrifice than the 25% from using archon:teleport, which I find rather clunky and unreliable. Scramble's uptime in densely packed areas is excellent, and it lasts just long enough in dead space to get you to the next clump, which often isn't the case with teleport.
I'd encourage any archon wizards to give it a shot. Even moderately geared ones will likely find it viable on their MP level of choice, given that they have a solid balance between DPS and EHP on gear. I used to use it ages ago on low MP, but didn't think it was viable at high ones. The movement speed is pretty much changes the game experience, allowing you to zip through the map and dart in and out of danger in a way that isn't possible without it. I'm likely not going back to pinpoint barrier.