Project Name as a token for export

I'm working with catalogs. I have some separate catalogs for a jobs (each for a job) and also catalog per year where I put my stuff. 

I can easily separate catalog exports by using Document Name and Collection Name I'm using to separate scenes or models. But issue occurs when I go on trip I want to group my photos by projects (let's say botanic garden) and within project I want separate them more gradually let's say flowers, animals, trees.

In this case it would be very useful to have collection top-level element names available as a tokens.

Document Name/Project Name/Collection Name/Image Name