| originally, i had the same reaction. But once a took some time to consider it, i was ok with it.
the more targets it has, the less likely it is to be a 100% miss. So in order to actually have a good chance to get the power back, you will be using your AoE power in a less than optimal situation in the first place.
So ya, its a good feat, and I would likely take it. But by no means is it a 'must have'
Cost - a feat slot, and spending one standard action being utterly useless
Benifit - A do over on an AoE encounter power next round. | 
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