I know nothing of Southern courses, and would love to learn one. I know the Aussies have several, and I bet South Africa has a few, too.
As for Open courses, we definitely need more. There is a large Euro contingent on this site. Carnoustie or Royal Troon would be a blast.
As for adding courses, I know it's expensive. But, it's also beyond time. The "best of's" and new pins are a cheap way of regenerating interest, but aren't the same as adding something new. And, do it the WGT way.....not the TruGolf way. Your graphics are so incredible when you do a course right.
Can't wait for Merion to be released, and it appears to be close, given the CTTH stuff surrounding it. And, I sure hope Pebble is next.
Again, I know it's a complex undertaking, but I believe 2/yr is doable. Before long, you'll have a nice library built up.