I'm wondering when users should add an A record as suggested here:
If you want to redirect a domain you will need to add a DNS "A" record pointing at the IP address of this server
My thought would be if they are interested in managing their own plugins on their domains site, but want to have it mapped to my network, they wouldn't need the A record.
If, however, they want to manage their site from the Admin panel of the networked subdomain, which is mapped to their domain, then they need the A record.
Am I understanding this correctly? That is, the choice of where the themes, plugins and admin panels exist determines whether or not an A record is needed?