No worries. We'll get there.
There isn't a costume system for all the characters, just the main character. I did consider trying to make a system that would let you enforce an actual uniform while at the Estate, but it would only affect character sprites and would take too much time to create the assets and implement, so it never got made.
Same goes for the 2D enemies and faces. There are some I could make 3D assets for, but others I don't have or couldn't make assets for even if I tried. It saves me a lot of time and effort to use the 2D assets I have.
I didn't expect there to be related tasks, it's so surprising. This will be a great game, will there be any interaction with these mothers during pregnancy? Are there any plans to make maids pregnant in the future? Players can share some of the work of the maids and pay a price for their pregnancy, which can also help them weigh whether to let more maids get pregnant. Perhaps this can improve some playability and immersion
Most of the potential mothers have alternate dialogue after they're pregnant, yeah. Deirlinn in particular gets some special events, and you can invite them to the love shack, though some content is locked until after they give birth.
I've considered making it possible to get the Maids pregnant as part of the post-game after the story is complete, but that's far enough into the future that I haven't made a decision one way or the other yet.