Walt,
I am not sure how it would work in a looser arrangement where the designer has his own shapers. In a traditional arrangement where there is a designer and a builder, the builder would be responsible for drainage whereever he graded something. If the gca dictated no grading in an area, and it didn't drain, it wouldn't be the contractors fault, however.
Of course, we designers hardly ever take the blame for nagging little problems either! We would just tell the owner that the plan didn't quite work, and the contractor would bring some equipment back to fix the problem under our direction......usually, those types of changes are made soon after construction completes, but sometimes, particularly on higher end courses, the Owner likes the idea of playing it a while and making necessary changes after a year or two.
As to bare areas, etc., in general, the industry is moving to "drop seed" contracts, where the Owner and superintendent are responsible for turf growth the second the seed is dropped. Providing the contractor has not missed a spot with either grass or ferilizer, then the owner takes over right away.
As a practical matter, there are usually a few small drainage problems no matter how good the construction, but fewer if there was a lot of rain during construction to demonstrate where the problems were. And drainage problems have a way of surfacing later, as water tends to find the easiest path and construction may change subsurface drainage patterns.
As my agronomist likes to tell supers of courses he consults on - you won't add drainage every year to the course, just the years you work there......