There is an effort going on right now to build a unified community out of many existing instrument control libraries - including python-ivi, lantz, eapii, and slave - that has been spinning up over the past couple of weeks. It seems like a very good opportunity to get a strong community built up around a powerful library that we can all contribute to. The architecture will be a bit different from python-ivi, but the plan right now is to keep the extensibility of python-ivi while building a more optimized abstraction layer around python metaclasses that will hopefully present a very similar hierarchical interface while making driver development a bit less cumbersome.
If anyone cares to participate in developing the specification for this new library, the discussion is going on here:
https://github.com/LabPy/labpy-discussion/issues