Mike,
While you don't say it directly, some might think also that JN and company wouldn't be either committed or creative as a smaller company. That isn't necessarily true, although as a small company too, I like to think you can be right.
For that matter, the $6MIL figure isn't out of line for building a first class golf course. I have trouble getting my golf courses in much under $4.5 MIL, without cutting corners in some ways (like California greens) and I gather that JN probably doesn't do. He also may sod more, do more extensive irrigation than I might, etc. (and certainly more than you did on your project!) I am sure most costs come with trying to build the course for the utmost in maintenance levels, which the high end clubs desire.
In any event, those items may even pay for themselves over time.
There are some conflicting articles on just what the value of the name designers are for housing, including a recent one where they hired Doug Carrick in Canada and the Owner says it makes no difference. NGF has studied name designers and says only 3% of golfers care. WSJ had an article saying the values go way up with the big names, but I am not sure there is a causal relationship. It could be that they are hired on projects where land costs, amenities, their fees, etc. are all higher and the developer HAS to charge more per lot.
Paul C,
If you don't think one gca can build two different course styles, go to Giants Ridge and play the Quarry and Legend, and/or trek up to Fortune Bay. If the site is different, most of us can do different designs.
Also, do you think Fazio's two courses at World Woods are different enough for one gca?