About Eve :
It would be nice if the players could choose between Eve as female (with strap-on in some scenes) and Eve as trap/dickgirl.
Since the game is text based, it shouldn't be too much effort to write the variations for the few spicy scenes, especially if this is started early while Eve's content is manageable ...
About Orson :
For players who are not into MM-content, it would be nice to be able to switch him with a sexy chamber maid girl ... which could join mc in the daily bath, etc and could act depending on mc's sub/dom stats and masc/fem status.
About Kathryn :
Is she just a source of denial and humilation for mc or will there be more (romantic) options in the future, eg mc could dom her on the dom masculine path (maybe after getting a bigger dick) or mc could become her pet/slave on a sub path (NTR)?
I have played her events once but now stopped looking for her since she currently seems like a dead end blocking options if mc is in chastity.
About Sybille and the dungeon :
With mc being able to be male, female, sub, dom, ... there are countless variations for content with nameless slaves, Sybille but also other characters invited to the dungeon. Current content feels just like the tip of the iceberg ...
About daily grind :
After the first week : For the daily bath it would be nice to have some automation that you don't have to click through all the dialogs every day, eg set : take daily bath, use oil, masturbate ... and then skip all with just one click.
If new bath events happen, the automation could pause ...
About weekly grind :
Progress in the game adds more and more new activities like reading books, interacting with NPCs, exploring the forest, working at the tavern and the brothel, etc.
After the first week the weekly grind of 3 times talking to each of the 3 trainers becomes a bit repetitive. Maybe reduce the number to 2 sessions per week after the first weeks or add a variety of other sources for training, eg more events which provide a boost to training (as you did with the books). (Players will probably play 2 full games, one as sub feminine, one as dom masculine, so in total they will have to go through hundreds of those 3 basic training events ...)
Maybe add an (optional) planner (time schedule) for the known weekly default activities so that the player may automate some of the grind and can concentrate on new content when mc progresses ....
About mushrooms :
The amount of mushrooms found per day seems random between 2 and 12 pieces. Players will anyway use rollback on those small numbers 2,3,4,..., so maybe change the range to something higher like 8 to 12 pieces to keep the game flowing ...