mDNS Gateway / Service Discovery with caching?

Does anyone know if Fortinet has any plans to properly support mDNS service discovery across networks/vlans with proper filtering and caching like many other competitors out there?  I know the current solution is to enable multicast routing but I really think this should be a more formal feature implementation with a caching and reply function much like an Application Layer Gateway implementation.  So many other vendors like Cisco have supported this for nearly a decade.  mDNS is here to stay and I think FortiGates should do a better job of making this an easy feature to turn on and control which would greatly improve functionality and security of customer office networks.