A lot of what's in that diagram is product management. That's good. Without strong product management you don't really know what you want to create, so no amount of excellence in project management is going to help make the thing you should have wanted.
You might take a look at Real Options Analysis as inspiration for how to integrate product management and product investment decisions with implementation choices along the way to a product.
You might take a look at Real Options Analysis as inspiration for how to integrate product management and product investment decisions with implementation choices along the way to a product.