Work on http://drupal.org/node/74326 (to use FormAPI-style structured arrays to build node bodies) has been going nicely. Things seem to work very well, and the flexibility payoff is big. Right now, though, we need to gather some good numbers on how much the change impacts page rendering times. Several of us have taken a stab at it, but the results are inconclusive -- working on local laptops or busy shared servers where any real impact was lost in the noise of other server load issues. If there are any folks out there with experience benchmarking, any help would be appreciated. --Jeff