this is actualy a very interesting idea.
Ghost engine and Salesory type outsourced selling but based on projects.
If you get the incentive design right it could be huge. Also I volunteer to be your first user from the sales side.
I'm happy to hear about Ghost Engine and Salesory, since it seems to show some demand for the type of "outsourced" or "freelance" sales that this app would be tailored to.
The sales incentive design will definitely be a huge contributor to the success of this project. If you have any feedback on incentive designs that you know are successful or that you would like to see, please let me know!