OK, so one major problem with REVIT is actually conceptual.

REVIT wants you to know early on exactly what your building will look
like, how it will be constructed and exactly where the walls go.

For example, we model our building in 3d, but use 2d for other
drawings - wall sections (for example). This is NOT the correct way to
do it - REVIT wants you to generate wall sections from 3d, and use 2d
to "clean up" the wall section - to make it actually look correct.

However, if you do this, the wall section will contain a mix of 3d and
2d information. If you were to move your building wall, the wall
section will get scrambled as the 2d information tries to determine if
it should stay fixed in space, or move with the 3d information.

Thusly, the only really safe thing to do is to draw the entire wall
section in 2d, as a drafting view.

This applies to most of your other drawings as well - details,
elevations and building sections.

However, if you are doing most of your drawings in 2d, why would you
use REVIT?

One might say that the answer is simply to know early on what the
building looks like. I've never seen an architectural project that
didn't get SOME sort of change during construction drawings, often
extensive. Thus far, this appears to be a huge time suck during CD's
and potentially create huge liability issues when information
disappears completely from your REVIT drawing.

REVIT = FAIL