Hi!
My suggestion for Artrage is the ability to control how the pen pressure affects the size and other features of the tools. Today, as far as I know, you can only enable or disable pressure.
Sometimes I want the light pressure on the pen to make already relatively big strokes and grow from there while I apply more pressure. Not always start from minimal size upwards.

Other than that, this software is TOP! Never found a digital media so natural as this one!
Cheers!