Seems to me that ideally, almost every variable of the spray brush would benefit from a checkbox for tablet pressure, and a slider for variation (like HSV now).

The interface to it is simple and powerful, especially the whole sliders to add randomness to things like the opacity and colour. This is a feature that is both impressive to see, but also can be used in a very wide range of ways, for example painting skin, which is not one flat colour, but really a collection of subtly varied colours.

In many ways, other than optimisations, this feature seems fully complete already, but if I were to ask for just one thing, it would be the ability to load in more than one image and have particles either cycle through them, or pick one at random each time. For example, you could have pictures of 5 different types of leaf in an autumn picture.

You’ve done such a great job with this though, that if it stayed exactly like it is, I’d be a very happy camper.