The kind of problems we are going to see this approach tackle will be problems that are somewhat noise and error resistant and that do not demand abstract reasoning. A special focus will be behavior that is easier to learn than to articulate - most of us know how to walk but we couldn't possibly tell anyone how we do it. Similarly with grasping objects and other such skills. These things involve building neural networks, filling in state-spaces and so on, and cannot be captured as a set of rules that we speak in language. You must experience the dynamics of your own body in infancy and thrash about until the changing internal numbers and weights start to converge on the correct behavior.
Different bodies mean different dynamics.
And robots that can learn to walk can learn other sensorimotor skills that we can neither articulate nor perform ourselves. Well, for example, there are already autonomous lawnmowers that will wander around gardens all afternoon. Any jobs done currently or traditionally by animals would be a focus. Whether these type of machines may have a future in the home is an interesting question. If it ever happens, I think it will be because the robot is treated as a kind of pet, so that a machine roaming the house is regarded as cute rather than creepy.