Multisite and CDN

Hi,

Trying to set up a common CDN for all sites in a multisite setup, I notice by default only the main site static file URLs get translated to the CDN address.

Each sub-site in the network needs to be configured manually. The CDN option is enabled on all sites but the Off-site URL is always the same as the sub-site URL.

The network is a subdirectory setup but also has mapped domains for some sites. It does not use a domain mapping plugin but I tested with both the domain mapping compatibility options switched off and on.

Is this supposed to happen? Would it not be a nice feature to be able to set the off-site url option for all sites in the network from the network settings?