At this point, it may not matter quite as much if the team ended up focusing more on the Lua API, graphics rendering, and general engine features than new official content.
The reason is because we are not near as dependent on new campaign content as we once were, advanced mapping and complex character creation is a lot easier than before and it is quite trivial to load up addons (unlike 2.1 which required console commands until very late in the cycle). Now I still believe there is value in completing the campaign according to SSNTails' original vision, but there is no hurry considering the platform the game has become.