Ability to search for ports by Vlan they are assigned to.
great idea
You can do this now somewhat, but not in UDT.
If you have NCM, try going to the NCM reports. Bring up the "Cisco VLANs" report. You can then use the search in the upper RH corner of this report to choose "VLAN ID" or even "VLAN Name" and search by VLAN using the box given. The biggest problem I see is that it does partial matches, so searching for VLAN ID of 2 will return 2, 102, 100000002. Same thing with the VLAN Name. Can make it difficult to narrow down on what you want.
You could at this point "Export" it and probably find what you want even quicker.
This is available today in manage nodes (if you have NCM)