Application Policy for Outbound Routing

Is there anyway to apply any of the application policies (found in content blocking) to outbound policies?

E.g. I would like to set up an outbound policy whereby icloud / itunes traffic is enforced to WAN and dropped if there is no alive WAN connection to avoid building up cellular data cost. I have been able to do this with Netflix by using destination domain as but Apple seems to be more complex.

If not, then please can you add it as a feature request.

I am using an external (MikroTik) wifi antenna on the WAN port to pick up marina wifi.