First off: i actually really like this game, outside of the adult stuff. i love the dungeon construction and i would like to offer some feedback. i would love to see this game go farther and i hope it does

1: please allow us to destroy plots we put down / build walls to redirect them. the mechanic where they explore the dungeon works excellent, but i wish we could direct that exploration. ya know, send them around the entire map, putting barbed wire the whole way. i wish it was possible however, due to them immediately being 6 blocks away from the throne room kinda sucks. personal opinion

2: speaking of barbed wire, id suggest less damage to health , but more damage to clothes. or just less damage to health in general. there's kinda no point to spikes once you get barbed wire and max it out. so make barbed wire do less damage to health so that way by the time they get to my actual fighter, they already are naked >:)

3: there's a bug where after you defeat a hero you get stuck on the screen and the rewards start skyrocketing exponentially. its killed 3 of my runs and it seems where once you get to a certain day, it starts to become more possible for it to occur. 

4: defidently need more varity on heros to fight. personal opinion

5: i feel that clothes are kinda useless. i mean yes they are sexy, but maby give them buffs to health or special boosts. just a though. also the rope bikini glitches out. lots of z fighting

Hey man, glad you too are enjoying the game. and honestly I agree, I also enjoy the actual gameplay far more than the NSFW stuff.  However, I do have some tips for you in terms of in game mechanics that already solve your issues.

 For example, you can actually relocate your throne room. Just click on a room and there should be a crown icon near the bottom left, click on it and you'll receive the option to relocate your throne room.

 Additionally, you CAN increase the variety of heroes you can find. Just send some of your people out to study the world in search of knowledge. They can come back with knowledge of other races, unlocking them for you to encounter as heroes or in the shop. These include Imps, Elves, Orcs, Hobgoblins, and Drow (not sure about regular goblins, haven't personally encountered any apart from the starting one).

I'm not sure if you already knew these things and were referring to something else, but nevertheless I hope you enjoy the game. I'm personally looking forward to the next update. Have a great day.

Some more points:

1. Is there some way for the dungeon master to learn the books? With the amount of girls coming, there is one male master and 10 girls in my dungeon, each needing the more rare books with the good positions. And the amount of (rare) position books in the market makes it more fit for the (less) males learning them.

2. A setting to adjust the male/female/futa ratio invading/birthing would be nice.

3. About the throne room relocating: this works only for the throne room and deletes the other room. After the first 6 or so rooms i would've liked to move the gold mine with 4 upgrades instead of losing it... And the point with walls/locking doors still stands.

But good job, your "monsters" being cute girls makes you want to buy the expensive gear for them, keeping you motivated. And the personalities fits them to a T.