The golf course and clubhouse should be integrated not just visually, but with respect to play. There ought to be a short walk from the 18th green to a patio or bar where you can drop your bag and grab a drink. In the other direction, the members sitting on the patio ought to be able to watch the matches finishing up. The design of the building is a matter of taste - in most cases, no matter what is built, some will love it and some will hate it and it will be a source of endless argument.
At my club, the 18th hole ended just below the clubhouse in an absolutely perfect position. There was a large, open yard between the clubhouse and the 18th green where wooden chairs were placed and on a sunny day, after a round, there was no better place to sit and replay the match. Sometime in the 60s or 70s, a well-meaning greens committee planted 4 tiny flowering crabapple trees immediately behind the green. They are now over 15' tall and completely block the view of the course from the clubhouse. Of course, because they look beautiful 7 days a year, we can't cut them down. So for the most inconsequential reasons, the connection between the clubhouse and course has been lost - in spite of an absolutely perfect design.