So correct me if I'm wrong, but currently, you can't use Alpha Beavers for harvesting wood, they just eat it.
So here's an idea, that could possibly be expanded for different animals in different areas. After taming the alpha beavers, they'd have additional training options, rather than the normal 3. Things related to what they do, such as harvesting wood, hauling the wood they harvest and that's all i really got.
Future animal additions could have their own specialized purposes, genetically engineered for this and that, being utilized by the colony. I think it'd be pretty neat.