I agree with your comments @medworthy
Besides the endless list of features and options, the project is very well written too. I know the developer personally and he is very serious about both clean programming and proper documentation.
I know a large school in Switzerland (ETH Zurich) is using SavaPage as a solution for their print environment. The copy part is done through PaperCut.
I do hope SavaPage can get a more permanent solution in NethServer as a module on top of the print module. Therefor some dev(s) should spend a bit of their time on creating a module. I tried to get some basics done, but my coding skill / rpm creation skills just are lacking.