And let me drive it. Visibility, acknowledgement would help me here, I would sayis pretty typical of what I hear on IRC but people don't want to go against the flow so let this be part of the flow.
To start, I talked about separating the form rendering and data structures and http://drupal.org/sandbox/chx/1088508 in. This two already will effect most of core.has a good idea which I would like to adopt and also experiment with a light OOP-ification of form API to make it easier to document / integrate / understand. Also get
Meanwhile we can take a good, systematic look at the mess of a caching we added to core.
Will keep us busy for a while.