It does more than that. In the Easy Cloud, the depth also changes the size of these "cells". There is a strong relationship between the largest feature size and the depth of the cloud in order to make realistic looking shapes, especially for the cumulus types. You can also change the "cloud type" to change this relationship. The Stratocumulus type uses a larger feature size ratio than the other types, so it produces flatter clouds. But, yeah, there are some limitations because of this. If you need to precisely control the depth and feature size independently then you need to use Cloud Layer V3 with your own fractals.