Forwarding services between Tagged and untagged vlans

At the moment in XMS there is a option called Bonjour Director that allows forwarding of Apple Bonjour services across VLANs which seems to work between untagged and tagged vlans.

It would be great to have more services added to this like chromecast or an option to allow all Bonjour services like aerohive have.

Support told me I could do this via a snippet but it only works accross tagged vlans so if that could be allowed to go between tagged and untagged that would also be another workaround.