Hey man !
To be honest, I didn't really enjoy playing, but I think the concept is really good and that you've already made the biggest part of the development. The first game I played when I came here was “enslavement war” and I really found the same spirit in your game. Here's what I think you should improve:
Have less grind, it's pretty frustrating when you have to max a stat to get to the next level. Especially since we're not given enough of an impression that stats change Lena's behavior.
I'd like to see more consistency in the paths. I wanted to try the godess path but I was disappointed to see that I had to increase obedience, which frustrates me a bit. Also it could be great to have a confidence path or something like that. Since we start the game with 0 obedience and yet she isn’t dominant at all you know what I mean ?
More focus on Lena, that's why we click on the game in the first place. I think you're confusing the player more with other people at the moment. Develop the interactions between her and the MC and I know it can be controversial but I think you should prioritize dialogue/story over sex scenes.
That's pretty much it. I really have hope in this game as I said I think the concept is great!