Most technical drawings are hard to read unless you work with them every day, which keeps operators, maintenance crews and managers from giving useful feedback on a new vessel or rig design. A 3D view they can walk through makes the layout understandable to anyone who has worked on a similar asset.
If reviewers can comment directly on the 3D view, their feedback ties to a specific location rather than a vague note, which makes it easier for the engineering team to act on. It also brings in the people who know the practical problems from the field, which is usually where the most useful design feedback comes from.