Are you asking about having a functionality in the DA admin panel to do this? I dont actually see a need for this though? Why would you like this feature to be added in the Admin Panel.
Reverse DNS are good for the servers for management and are normally set by the DataCentre or by the person who owns that IP range. A Datacenter may have say an entrie class C of IP's so they would set the reverse DNS so that they can manage all the servers easily that they are hosting.