Hard to say! I think I'd need to get my hands dirty with the project and builder to figure out if I could make good use of a batcher! While I could generate say a thousand and pick the ones I like, it would be harder to tweak them if one was really close.
Without a batcher, I assume my workflow would probably be to hit random to get a whole random person to work from, then probably want to change a feature or two so either manually find one or hit another button to random that specific feature a couple times. With the option to also random a feature, I could also have a base and random other features to quickly create a group of differing folks with shared features.