Thanks for the quick reply. To me it seems a very strange business decision indeed, to only shoot/map let's say 70% of a course. Those courses seem interesting and I was looking forwards to actually playing them.
Although the game may have been founded around the CTTH, it's a very limited concept and I would imagine going forwards that the vast majority of site useage and income will end up related to stroke play. This game is a sim rather than an arcade game so I would imagine most people who stumble across it will be wanting to sim golf as realistically as possible, not engage in an arcadey (I personally find gimmicky) game, in CTTH. I used to play shot online and decided to try WGT because it looked like it was as close to playing (proper) golf as possible.
Going forward I'm not sure of any reason not to complete the existing courses with fairly high priority, otherwise I imagine you get a pretty high turnover of players with such limited stroke play (the part of the game which provides the most variation in terms of playability). 1.5 more courses will definitely help.
As for being in beta, having been on the site for a few days it looks to me like this game is beta in name only. I run an MMOG too and displayed the site as beta for about 6 months. You guys have been going since 2008 according to the news archive and everything seems polished. At whatever point in the future you drop the beta tag, the site won't be fundamentally any less beta like, it will just have more content.
Anyway, I like the site and the game - it's well put together... I just hope you add more courses soon because like I said, I'm bored of the 2.5 courses already. If I hadn't just spent a load of money on clubs I'd probably have drifted away from the site after a couple of days. I can't see your stats but I would guess that is not uncommon.