the animal den screenshots look awesome!
if I can make a suggestion; some of the animals could benefit from having a 'nest' type area within the den. for example, wolves only really use dens when having pups. It would be *awesome* to have a wolf-mother protecting a small dugout area with maybe some other females and males dotted around protecting them. alpha & 'beta' wolves in particular could be enormously ramped up in difficulty since they're always much tougher/smarter than the rest of the pack.
when done, do you clear out the pups too, or leave them as the contract was only for the advlts... oooh, ethical dimension to the mod!
also, having the occasional grownup wolf-child or woods-child who's lived with the pack of (whatever animal) all their life who could perhaps be crazy protective of them and add magic to the hunt?
anyway. I know i've said before on the nexus, but i'll say it again: I'm a huge fan of your mod. Can't wait to see what's next!