Some things I noticed:
-While the incest tag needs to be there, breeding a super servant with every trait ever sounds funny to me. That aside, that kind of thing is also a fetish so it doesn't really need to be addressed.
-Money is absolutely not an issue. Historically, slavery is extremely profitable and this game is no exception as by the time I was at day 20, I was pushing $1,000,000. Even if you kill them by accident, you can sell the corpses if you have a graveyard.
-The combat HUD needs to be looked at. I was forced to reload a save because a prisoner in my throne room obstructed my view of the enemy and I couldn't attack them.
-As mentioned above research is an obnoxious grind. 12 research labs with the increased research room trait at max level still wasn't giving me the huge amounts I ended up needing.
-While pretty much any level of enemy can be dealt with, the level scaling gets too high too quickly, resulting in everyone needing to spam stun attacks in order to not instantly die.
-Relationships among servants follows no logic that I can deduce. Factors that influence servant relationships need to be listed somewhere.
-If a servant *worships* you, they should do whatever the keeper wants them to do, especially if they have the Obsessed personality.
-If someone is a prisoner, they shouldn't be able to decline the Keepers demands in the throne room or free themselves from any stations you assign them too. They've done this for me before.
-You should be able to toggle whether or not servants are specifically able to engage in intercourse with each other while in the throne room. The throne room is great for improving relationships, but if you don't want them having sex, you need to disable their ability to interact with each other at all.
-Assuming you have the budget, destroying a room than rebuilding it will reroll what effects the room will have, so you can rebuild rooms until they get an effect you want. Such as destroying a putrid room and rebuilding it to get an inspired room.
-Altar and Market access take top priority when starting the game to make money quickly and get access to supplies before the over leveled enemies begin spawning.
-There is no practical reason to get access to any of the other species other than anesthetics.
-Men can get pregnant and women can impregnate. Neither of those things should happen.
-Traps are useless after day 18, even at their max upgrade since I've only ever seen an invader above level 30 get hit by a single trap once in my roughly 50 hours playing this game.
-The servant upgrades aren't very useful. Defense doesn't matter since everything will just kill you in one turn by the end anyway. Experience gain doesn't matter since you'll be gaining lots from killing enemies 5+ times your level anyway. Relation Gain doesn't matter since you can give them 4-6 trinkets and they'll love you right away. Attack doesn't matter as much because you need to stunlock enemies to kill them anyway. Increased Loot might be useful, but I've not noticed a difference in it.