With expo, you don’t get more control throw than you would without it. Expo just softens stick input at the center - to lessen over-controlling - as long as you don’t automatically defeat the point of expo.
Of course this probably mean I should physically increase the aileron throw so half of the aileron throw can be enough to do most of the newbie needed to do, but I am just saying it depends on the particular plane. Basically if a plane's aileron authority is weak, then increasing expo may cause pilot to over control it.
Well, correction: maybe not exactly "half way" but there is a point that the curve turns from "softened" to "hardened". If the throw at that point is still not enough to make the expected movement, then it is going to be in trouble because we are getting into the harder part of the curve.