There may be many more features which PRPC doesn't have. May be the work on it is in progress with product team or may be Pega never felt to have one such thing.
As a developer or the production system admin or a manager role in an prpc application, you may want to have a visibility of the business process. The over all business processes created in the system till date, the business processes running now, business processes that are suspended, business processes in waiting state.
Something like this,
Images: Cordys BOP4
We can also get all these info by running OTB list views from Work-, Assign- etc. but still a view like this would certainly be useful.
Couple of days back, when i had been to Pega Developer Conference 2013, i talked the team at the Designer Studio booth and they took the advice with grace. They said, they never thought about it, its a very important feature to include and would certainly take the input.