For some time we are thinking about an additional tool that helps to merge, split and in some basic ways edit PDF files without sending them through a printer. Now we have a basic draft of such a program with a bit of functionality already working. The working title is PDF Architect.
Though it is just a draft at the moment, we would like to hear what you think about this idea. There are some screenshots for you to look at below. The user interface is in german at the moment, but hopefully you can get the idea of what is going on there.