I like the update! As the Dragon, it makes you impregnate 3+ maidens and visit most of them every Festival instead of doing mostly self-impreg every day. You can't make Emily do everything, she really feels like a backup witch even when she takes care of Tammy for free. You are still incentivised to focus on a handful of characters, but that handful is nearly half the cast instead of yourself and one other. The number of characters you need to take care of will also grow as more get added, which is good.
In terms of balance this is a nerf to the Dragon's very efficient self-impregnation, they can't spam it like before. They are still the best for now, but as more characters get added the Harpy will take back their place as the fastest growing race.