Improve Brush Selection

I figured out a workaround to make it easy to start brushing with one and the same keyboard shortcut, without having to worry about what layer type is currently selected. This request is about making this workaround superfluous.

The Problem:
There are a number of situations where one would like to use the brush (e.g., to draw an adjustment mask, or define an area that needs to be healed). For instance, imagine one just used the Eraser brush and now wants to continue brushing normally. Or one just selected a layer to tweak some of the associated parameters (e.g., its layer opacity) and now wants to modifying the mask that already exists (whether it is an adjustment mask or a healing or a clone mask).

Unfortunately, in these situations, C1 forces one to manually determine what the currently selected layer type is and then select the right brush tool accordingly. So when using keyboard shortcuts, one either has to press "B", "Q", or "S". If one does not pick the right one, one's layer selection will be invalidated because C1 figures one wants to add a new layer or move to another layer.

It is not only unnecessary to figure out which one of the choices is the right one, in order to support efficient brushing/erasing one is also forced to have four keyboard shortcuts close to each other (the three for the brush types + one for the Eraser brush) and to assign four buttons on a controller (where typically buttons are precious as there are only a few of them available).

The Workaround:
The workaround I figured out is to define a macro for a single shortcut, say "B" which issues the following three keystrokes: 1. a brush selection, say "Q", 2. move one layer up, 3. move one layer down. The last two operations force C1 to select the correct brush type for the current layer. No matter whether the layer is an adjustment layer, healing layer or clone layer, after executing the above macro, subsequent brushing will always result in the desired behaviour (the adjustment brush, healing brush, or clone brush tool will be used).

The proposed solution:
Can you please give us a function (to which we can assign a shortcut) that replaces the above workaround?

Justification:
I think we all agree that the following operations should be supported:

1. add new adjustment layer.
2. add new heal layer.
3. add new clone layer.

4. start brushing on the current layer (without having to figure out which of three possible concrete brush types to choose).

C1 supports 1.-3. but only supports 4. if one selects any brush type first and only then the layer (in which case C1 changes the brush type to one that fits the selected layer). C1 does not support 4. when the reverse order is chosen, i.e., a sequence that starts with selecting the layer first.

This is a problem because
a) it forces one to keep a certain order. What if one selects a layer first to make some tweaks to the adjustments, e.g., increase the exposure, and only then realises one wants to modify the mask as well with the brush?
b) the layer is always implicitly selected first, when one returns from using the Eraser brush.

In these cases, C1 forces one to pick the right brush type explicitly, rather than simply being able to use one shortcut to start brushing (except if one used the Eraser by using the top end of a styles, in which case C1 is able to figure out itself to which correct brush type to return to).

Some people think the following should also be supported:

5. start brushing in adjustments and either add an adjustment layer if necessary, or select the top most adjustment layer.
6. start brushing in healing areas and either add a healing layer if necessary, or select the top most healing layer. 
7. start brushing in cloning areas and either add a cloning layer if necessary, or select the top most healing layer. 

The good news is, all functions 1.-7. could be simultaneously supported. All that is needed is to add one more function to the current feature set that allows one to replace the workaround I described above (selected brush, move to adjacent layer, move back to original layer) with a built-in function (select the brush type that fits the current layer selection).

Please don't merge this feature request with any other one. I'm concerned that doing so, will hide it behind other requests that have already been dismissed for some inexplicable reason. I'd like to avoid that from happening since the current request only has upsides (improved productivity, less confusion, more efficient keyboard & controller usage) and there is literally no reason against realising it.

Note that there is only a single Eraser brush for all three layer types. In other words, only one keyboard shortcut suffices to select "erasing", regardless of the currently selected layer type. Imagine how cumbersome it would be to always having to select the correct eraser brush, i.e., an Adjustment Eraser vs a Healing Eraser vs a Clone Eraser. This would lead to six keyboard shortcuts required in total. Instead, it makes 100% sense to only have one eraser function and let C1 figure out what to do, depending on the layer type. Now, it could make sense to have a function that realises one of the requests "erase adjustment", "erase healing target", or "erase cloning target", and jumps to respectively existing layers accordingly to achieve that. However, these would be extra functions that should (if at all) come on top of a standard "erase (parts of) the currently selected mask").

Likewise, there should only be one Brush, which should only require one keyboard shortcut, and C1 could figure out which concrete brush type to choose, depending on the layer type.

With the above approach, one can still support 5.-7. above by offering three functions that add or select the required (topmost) layer (of the requested kind) and then select the brush tool (which always behaves correctly according to the layer type).