I think the game would really benefit from more small game that isn't mainly rabbits and birds, mainly between classes 1-3. Granted, I do think we need more upland game birds.
Anywho, to the list
Fisher/Fisher Cat - Class 3(?), could be backfilled onto NEM, would definitely have a chance to go aggressive too
Honey, American, and European badgers - class probably class 2, but oddly durable and definitely mean, not liking being shot or shot at.
Honey badgers could be backfilled onto Vurhonga, preferably put onto a new reserve
American badgers could maybe go onto SRP or Mississippi?
European badgers could be backfilled onto Hirshfelden maybe?
Wolverine - class 3, backfilled onto Yukon and/or added onto a new Canadian Artic or Alaska map, like the badgers, they'd be durable for their class and pretty mean.
Pine marten - a simple class 1 predator, not sure where they could be backfilled onto as I don't know much about em
Striped skunk - class 2, backfilled onto NEM or Mississippi. Could spray you if you get close, alerting nearby animals until you rest.
Opossum - class 1 or 2, backfilled onto NEM or Mississippi
Eastern grey squirrel - class 1, backfilled onto basically any American map
Red squirrel - class 1, backfilled onto Hirsh