Composition Mode

Would be nice to have more control over the options available for the Composition (full screen) mode. For example, controling the opacity of the sides (non-document) in particular if one does not want to see anything (or much) on the sides to concentrate.

In my case the only thing I am interested in seeing in composition mode is the Project Targets. In that case, it would be nice that when the user pops up the Project Targets small window, that it automatically gets docked to the side of the screen rather than somewhere on top of the document,

I agree with you, I would like more options

There will be in version 3. Just wait, or test the beta version.