General Abstraction questions

Hi

I understand the differences in layouts and layers.

Is there a general rule of thumb when to use one or the other.

Personally I prefer layers because hiding them seems to be much easier than swopping between layers but that might just be me.

It also raise the question when and where I should use "abstraction"

I can put items in folders, separate items with layers or layouts. Use global vars etc.

I know there are some general developer guidelines on this but has anyone made a list for Construct?

Also hiding layers VS swopping layouts. Single event sheets VS sheet per layout.

TIA

Layers still exist in the scope of game logic. Turning off a layer does not exclude logic processing, collision etc.

Layers should be used for visual distinction and parallaxing

Layout should be used for gameplay distinction.

Major screen changes

different levels