One suggestion I would like to see considered for implementation is that when you select a brush and go to the brush engine. By default the brush icon that relates to that particular brush is auto loaded into the square on the scratchpad. This is to help circumvent the loss of the brush Icon when a brush is permanently saved or over written since the brush icon would by default be readily available for a new save state. Without the user having to remember to hit the brush Icon button in the scratchpad.

Currently its to easy to have user mishaps in which the user forgets to hit the brush icon button to load it onto the scratchpad. This could also be a toggleable feature so if turned on the user doesn't have to worry about icon loss. Simply if they want to change the Icon they can hit the clear button and craft a new Icon for the new brush. I understand why it is the way it is right now.. so a user can distinguish the new brush when searching for it. But there should also be a safety protocol for those that keep forgetting to hit the brush icon button to load it. It takes longer to make a brush Icon or to retrieve a brush with the particular icon than it does to find a brush in the brush catalog.

Krita has functions to protect from user error currently with backing up of brushes ect. This would further ensure minimal user error in the end and help protect the integrity of the brushes.

Lost my clone brush icon that way and still haven't found the time to investigate how to get it back