Exclude Device Ignore Rules for a DataCenter

Device Ignore Rules are set globally. Within our entities (countries) it is fine to exclude f.i. Windows 10 devices (EUC), but within our Datacenters we'd like to discover everything.

It would be a nice feature to exclude certain IP ranges from the Device Ignore Rule.

All subnets outside the DC are different from inside the DC, so based on that they can be ignored, but there are sometimes also other devices which we want to be discovered in those subnets. By excluding a subnet you'll exclude everything, by excluding certain IP addresses you have the risk that in the future those addresses are being used for something else, i.e. a server, and not being discovered while excluded. 

I want the discovery to be dynamic and not static and no extra administration outside D42.