Layers rember last used tool

[Singapored]

Here is an odd request, but something that I have frequently wished for. 

 

The problem: 

Working as a digital painter, I frequently break down my painting into separate layers. Each layer has its own function: one for light details (set to screen), one for large shadows (set to multiply) one for ordinary paint. etc. As one goes from layer to layer, switching between the different brush settings can be arduous and boring. 

 

The solution:

Each layer presents the option to remember the last tool that was used on it. When the user switches to that tool, the tool automatically becomes selected, together with all its settings.