The course creator is very well implemented, and its navigational simplicity is probably the feature that is most appreciated. It still needs a couple of additions and tweaks before the final retail build makes its way to store shelves, but most people should find it accessible at an entry level.
In it's current form, you will be able to come very, very close to replicating a specific course of choice, with some creations having a more authentic feel than others. I have spent approximately seven or so hours using the tool, and I am from mastering it, but feel very comfortable in the creation and application process of it, as a whole.
Example -
Hole No. 1 at Augusta(Tea Olive) You can duplicate the slight dogleg to the right perfectly, the elevation of the hole, and the right-side fairway bunker 300 yards form the tee-box. You can come very close to recreating the tree lines on both sides, and come very close to matching the undulation of the green and its shape.
As of right now though you will struggle a bit trying to create the exact foliage, Tree types, and of course - no crowds lining the fairway. Please understand that the CC is still also in beta form and many things could change between now and the final build.