We all have opinions on what tools are lacking in ArchiCAD - rendering/ nurbs/ relationships etc etc.
The UI is also very clunky but we still have not seen much of an update on that either...think the materials palette for one. Surely we could have smaller snappable palettes a-la photoshop et al Adobe products...
Just saw this interesting post on where Revit is going. Funnily enough I know some who would be put off by the ribbon after MS Office experience....what do you reckon?