John from my experience it has to do with the club atmosphere much more then the the fleet. I'm part of a small club out on the west coast. We have 2 2-33's, 1-26, and a DG-100. None of these are great cross country trainers, but the club is Very cross country oriented. In the spring when the weather is good there will b at least 5 or 6 people going xc in private ships and the students pick up on this.

Another thing to note is that you don't need to be a CFIG to teach cross country. One of the members of our club owns a Duo and he will often bring fleshly minted pilots on flights with him to see what you can really do with cross country and for mentoring. For me personally he has been the best resource for learning to fly cross country both on the ground and in the air..

Last note, and this is probably an unpopular opinion, but I think that badges, at least after the bronze badge, are a silly and outdated way to encourage cross country flying. For a badge one must declare a task, fill out a lengthy task decoration, find an official observer, find a certified tracker, if not in calibration get that tracker calibrated, and so on before making the flight. These steps are for the most part pointless, annoying, and discouraging people from flying. Thus I think OLC is a much better motivator for cross country soaring if you need one.