DISCLAIMER: It may very well be that the issues discussed below have a solution, of which I am unaware, due to my current level of Revit experience.
I am finding it very difficult to draw/model with any accuracy. The lack of an exposed coordinate system (let alone a user-defined one), and simple things like insertion points for linked Revit files or Model Groups is maddening. Modeling anything, in place, where you want it when you first place it is extremely difficult. The fact that the project on which I am working has multiple weird angles does not help.
I am also frustrated by the number of items in the program that can not be done with accuracy or repeatably. Clipping a view and placing a view on a sheet are, so far as I can tell, a total "eyeball" situation. It becomes rudely apparent when you change from one sheet to another, and what should be aligning plans on adjacent floors (or aligning plans of different types of the same floor) ends up being an animation, with the plan moving up and down, side to side or both.
Side Note to Self: The next time someone asks me to work on a project where adjacent rooms are rotated at 1.53 degrees, just say no.