It's a shame Cat doesn't put much if any time alerting people to the capabilities of a crawler loader. Put a quick attach on a track loader ( full sized) and you really would have a productive machine. I don't think they want people to know about crawler loaders.
Fusion quick couplers (same as CAT medium wheel loaders) have been available on the 953 and 963 for a few years now and are just starting to become available on 973. A lot of sewer and water customers are buying them this way so they can switch between a bucket and forks, but there are a number of other compatible attachments as well. I agree we need to do a better job of advertising for track loaders though!