Major development tasks
I agree --- we should separate out synchronizing a federation of wiki instances as a separate development task, i.e. introduce a new Phase, i.e. Phase 5: Techology tools -- Synchronizing a federation of wiki instances which runs for a year in parallel with Phases 3 & Phase 4.
I agree different technical leads would be appropriate and there is also a contingency related to additional funding to bring on board enough development capability for Phase 5. As you say -- this is not a trivial challenge, and I would also like to more involvement from the international community in terms of development and co-funding.
Shall we focus on improved refinements and focus for the existing Phase 3 & 4. Is the OO / Microsoft split the conceptual division point between Phase 3 & Phase 4?