Hi Craig, valid case indeed. We have been looking to do this, but couldn't due to other priorities. We will look into how we can deliver on this in near future. In the meanwhile, you can use this app to clone the changes. 

Mike, we are planning to roll this out in the next 2-3 weeks.

We have rolled out the Clone project functionality today. If a new project will have similar outlines, tasks, and resources as an existing project, a Project Owner can now quickly clone an existing project to save time. Please do refer to the solution article here for more information.