NetBox with VDCs and FEXs

I'm curious how others who use NetBox manage "devices" where there isn't a 1:1 mapping between logical and physical devices. We're evaluating several DCIMs and this seems to be the only major hurdle is using NetBox. Am I missing something?

More specifically:

We have a few Nexus 7ks that each have several VDCs. In this case, there is a single piece of hardware (rackspace, s/n, etc) but multiple logical devices, each of which needs to be tracked as there are some interfaces shared between contexts (Management, for example) and as we want this to be an inventory source for multiple tools.

Also, these same N7ks are linked to several N2ks which represent separate hardware (they take up rack space, have separate serial nos.) but are logically part of the same device.

It feels like the NetBox "Device" is unreasonably enforcing a logical:physical device relationship. Any suggestions?

Thanks