Well since Ame and Cass are about to insistently tease us with Razor Wind for few months, I was wondering what is that all about ? Nothing is sure by any means, but I suspect a high buff on it, something like healing you by 25 or 50% first turn or increasing some stat, I would bend over a defensive utility.
Then with all that heavy teasing, I was expecting that it would be highlighted in at least one major fight, to show how it shines. And I was wondering, which one ? So I tried to figure out which Pokemon could make a good use of it, and I noticed Drampa could learn it. Depending on the Razor Wind effect, I could easily imagine a Drampa in El's team in the Elite 4, with the following sets :
If holding a plate :
-Dragon Pulse
-Nature Power
-Roost/Razor Wind
-Hyper Voice/Razor Wind
If not :
-Dragon Pulse
-Nature Power
-Roost/Razor Wind
-Razor Wind/Flamethrower/Fire Blast
That could be a good way to introduce it IMO. I would go for the first set with Hyper Voice and Razor Wind.