Thanks. You can do some of that with the latest version for vs2012-2015. The rest is in the pipleline

Create any new sketch then right click the project name in the solution tree and selected "Add>New Arduino Library". This will show you how to include a new library inside the test project. You can add your own libs manually as long as they comply to the arduino rules. Vm creates a v2 format lib with src folder. utility is for v1 format.

You can also place copies of existing libs within the special "_micro-api\libraries" sub folder, This allows you to modify existing libs prior to copy back to sketchbook/libraries or wherever they belong.

Libraries in "_micro-api\libraries" are compiled in exactly the same way a std library. Therefore they are #included in a sketch in the same way we would a std library (without path). 

If you create a new library folder below a sketch you might have to do action such as compile or save the project before intellisense will recognize it.

Interested to hear what you think, see release notes for a little more info.