So, an update on the Consignments. I think you need a minimum of 1 imprint from the region for each relevant consignment to be turned in. That or the relevant Boss Relic. This is because I just got asked for an Mono Air Wilderness Consignment and I was able to turn it in and the difference between all the Dual requests and this Mono one is I have at least 1 imprint in just about each Mono as well as all the Outer Mono Boss Relics.
If I had to assume the winning factor its definitely the Relic. There are 110 Wilderness Relics from bosses, coincidentally there are 110 total consignments. It also explains why the request differentiates Inner and Outer Wilderness zones.