I would like to have in AC is temporary dimensions and the ability to locking things with grids, walls, etc., as Revit does. It would speed up the design process considerably.
Nothing is perfect, but I can do way more with ArchiCAD without feeling frustrated when using Revit. ( And I was the "expert" in Revit.)
One of the main reasons I switched was the constant emails and phone calls to push me to switch my permanent licenses to the subscription model... and the ultimatum when they cancel the maintenance program, so I have to decide if I accept the extortion from them or I go with the competition...So, here I am now.