That the reputation cannot be increased by having girls performing well is extremely counter-intuitive. Mostly because to increase reputation, you need to send them off but you don't have an infinite supply of monster girls. That feature feels more like a panic button when your reputation becomes dangerously low, not the main (and pretty much only, save for a few policies) way to increase reputation.
The reputation gain is definitely the biggest problem, gameplay-wise. Slowly gaining it by having skilled girls would help compensate injuries. Sending girls on side-jobs while still keeping them would be a good trade-off between managing your reputation and training the girl. As a last resort only should come the option to definitely send her off, since the supply is so limited.
I know it's supposed to be a school so you're meant to send them off at the end. However, it's incompatible with building up your girls over long periods of time with numerous skills to unlock. Players interested in management games tend to like to min-max things, so this goes against the very public it's targeting. In my case, if I have to half-ass the training of those girls so I can send them off to build up reputation, not only do I stop caring about the girls, but I also stop caring about how good of a job I'm doing since it doesn't really matter in the end.
The evaluation rating only serves to dictate how much money you're getting AFAIK, which you don't really care about since you can't go bankrupt. It's merely to gatekeep the player's progress.
Then for the graphics part, it's curtains closed when the actual fun stuff happens. No sound, no image, no nothing. The fun part is actually dissociated from gameplay other than the unlocking conditions. That's the one thing you don't want to do, since that gives players no reason to play the game unless they like the gameplay. Such a gamble is very risky and only worth it to test the waters if you have plans to make a non-adult version or a non-adult game inspired from it.
Shame, game has potential (though quite a few games do) but as it is, it feels more like an closed alpha to me. And I was so looking forward to playing it too, being a sucker for this type of games.