After having a talk with aseigo today I have been lulled out of my ill-deserved slumber. So let's try something and see where this goes...
Plan -
Step 1:
Collate an actual list of all KDE's dependencies (Techbase).
Step 2:
Find out which are actually used for functionality on OS X (libagg, opengl).
Step 3. Remove or otherwise move out of the way X11 includes and libraries.
Step 4: Compile and package software only requirements software provided by the base the operating system. Qt first.
Step 5: Repeat Step 4 for the kdesupport software from a stable snapshot.