I don't scale the specialty grains or the hops. If you just change the base grain 10-15%, you'll have a very similar beer. However, if you are talking about moving the ABV 20% or more, then you're into a totally different beer.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk