Any MAJOR change that affects all races is a big, BIG thing.
Basically, if only ONE race will have loli/shote, than the workload is like adding another race. If all races need to have loli variants..well...exponential increase ahoy.
2D games, unlike 3D games, require a lot more work for animations. Well, especially if you want every pairing to have a unique one.
Which is why I said that everything comes with a cost.
In terms of actual breeder - I wonder what would people think if the breeder was a shadowy outline? If you couldn't see his face or hair color? That would significantly reduce the workload, while at the same not giving the breeder a set appearance.