Cache proxy is meaningful for same content delivery to multiple endpoints.
C1 already support that for our security client updates (AV databases and client update files) and also for patch installations (if you already set it up with caching like WSUS deployment)
There is another post about something like this, having some software that could be installed on small computer that could be dropped into a network that would allow caching and maybe even store backups, software installs etc and being able to trigger of scans and use as a local device monitor all controlled from C1