I've seen the wall of text criticizing the number of "LI's" in this game. It's not a new criticism either. I totally get where they are coming from. However I should also state that this is my personal favorite AVN of all time. With that being said, allow me to throw my own two cents into the ring...
Firstly let's get this out of they way, you get to choose if you want each girl to be a part of your group or not. The only two you don't have the choice in is Tracy and Jessy. So if you feel the stable has too many fillies in it, it's your own damn fault.
More importantly though you should stop thinking about all the girls as being LI's. Let's not forget that LI stands for Love Interest, meaning someone that Ryker would have a serious long term relationship with. As it stands right now the only LI required is Jessy. Even Tracy, story wise, is more just a fuck buddy. The ones you can choose to have a serious status with are Jessy, Rachel, Willow, Angel, Katy, Nikki and Rin.
All the other girls in the game are at most casual flings that aren't yet at the point of serious relationships. Hell you can even choose not to make Jessy a future Ol'Lady. You can choose that you don't tell her you love her.
So if you are one who sees the number of women Ryker is able to fuck as a problem my suggestion to you is to play through the game twice. The first time you say yes to taking on every girl and doing the most you can with them. The second save is where you pick and choose the girls you want and just leave the others be. When ever a new update comes out if it doesn't further the main story or have one of your second save girls, just skip it and wait for the next one.