Yeah, I have a Logic XS Key, which means the old beta of Sound Diver will not time out for me, but I haven't got it to work well. I recently bought an old 12inch PPC PowerBook that I may try it on. to see if its happier.
My complaint about things like CTRLR is that it just focuses on editing, and basically nothing on the librarian side of the fence. A while back I started sketching out an idea to use python to build editor/librarians. I'm not very good with python so it was an excuse to learn. The idea was to have a master app that handled MIDI communications and librarian functions, and then a standard object spec that let custom object build editors change parameters, request dumps, send dumps, parse dumps into parameters, etc.. Then one object per synth (or more likely one object per datatype, since some synths would need multiple types.) The object would hand MIDI to the master app and the app would talk to the synth, parse responses and had it back to the object. But that would mean writing a librarian once, and each object wouldn't have to think about that, only caring with parsing and creating sysex.