CodeDOM for Spatial Analyst?
Long ago I remember writing DOCELL routines for ArcGrid. Apparently this is no longer supported. However, it is possible to write a lot of tedious ArcObjects code to loop through each pixel in a PixelBlock. It seems like it should be possible for ESRI to use CodeDOM so that a user could write just a single method that gets called by ArcGIS for each pixel. This method would be added to code generated and compiled at runtime.