I like this idea a lot, though I also like the non-alerting nature of Meteor as is. I could see this affect also being a Fear or Sleep affect to mimic the paralysis some feel when observing something big happening.
The Launch Unique appears to persist as long as the power is active--this includes if you unslot it while the power is still active and replace it with a Blessing of the Zephyr. It persists through zoning, but goes away after logging out and logging back in.