Saving Paper docs to existing Dropbox folder structure/file-system.

I have been wanting this feature for a long time. I am a small business owner / independent sales rep. I work on many large projects that typically have many changes and revisions. I keep all of my proposals, specs, customer orders, and all other supporting documents in Dropbox. I need to keep notes for all of the changes that are made for each revision. I would like to use Paper for this purpose and to share information with customers. I have tried Paper but not having it live in the same folders as my Dropbox files make it hard to keep everything organized. 

I have tried Evernote and sharing the public note link with my customer, I have tried Google Docs inside Dropbox (not too happy with that when sharing publically), I have tried Word, and I have even tried text files.  I want everything in my existing Dropbox folder and I want to be able to create a Paper document right inside my Dropbox account as I can for Word and Google Docs.