One of the great times to use wings is when there is a mispull or a pack of adds.
These situations are generally the most threat-sensitive, when ambient healing aggro is high and theres a ton of stuff running around with clear threat lists. Popping wings under these circumstances lets the single Consecration tick you might get on some giant green killing machine before it reaches a clothie desperatly spamming Seed be that much more reliable of buying everyone the time to get things under control.
As for boss fights, I greatly dislike opening with Wings-->Avengers Shield.
The thing I dont think is very good about this is that it squanders a big part of Avenging Wrath's duration.
Additionally, I often need to waste my first Judgement on a utility Judgement instead of a threat one, and thus the actual threat benefit of using wings as an opener to your front-load threat is actually far lower than if you used it at the beginning of your second cycle instead of your first.
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