Simon,
A course like Brora nails it all in spades. The cost of the land and availibilty of the right parcel is where it can get difficult. But if you want: a jolly, solid test that could be built and maintained economically at under 6,500 yds, command a decent but not extortionate green fee, provide a modest, warm and comfy clubhouse with nice food and drink...Brora is it!
The juniors and fossils can swarm it and it moves along well, the chop doesn't get thrashed and with a wee bit of wind, the lower handicapper won't rip it apart.
I've not played Common Ground in the States, and the land there does not appear to have the undulations, movement or quite the quality of Brora, yet Tom's team coaxed a fine, affordable layout from it within a economical budget. The Colorado Golf Association didn't have to pay for the land to my knowledge, which makes for an easier proposition when constructing and then keeping costs affordable across the board.
Communities in Scotland often have common ground they can utilize for public projects like golf, but generally some private land needs to be acquired to get the parcel size one needs to build a course on quality ground. There also is the not so small matter of the fees an architect and his team need to lend their expertise to getting it right and on budget. Few of Tom's caliber would be able to do a project for a small fee, though in these times I'd imagine a project with smaller remuneration is better than not having one at all!
I believe there is great opportunity, worldwide, for revitalization of urban and neglected courses. If they could be built in the 30's, they sure as hell could be restored in the 2,000's. Golf, particularly the administrative bodies, should take a step back and re-assess the real mission...putting the health and accessibility of the game first, for ALL that could afford to play. That goal, instead of lusting after the next corporate partners to sponsor the moneyspinners lining the executive leadership's pockets and focusing with such fervor on conducting various championships for the 1% that compete...would help the game gain much-needed vitality and healthy, sustainable growth.
Common Ground also has a fledging caddie program that has done quite well in it's early stages. This, of course, is impossible to achieve at a municipal or non-high end facility...just ask the NGF, PGA and Club Car crowd, as well as many other misguided folks that frequent this site and can't imagine that a caddie could add to their experience or not drive the facility to financial ruin due to the "golden goose" that is cart revenue. Please.