Question about the OP:
"And I really found some serious plotholes on the Original game that I will try to fulfill here, as well as fleshing out the world."
This comment interests me: What plotholes are you referring to? Because one of the things I liked about the original is the fact that by the 3rd part they did great work in continuing/fleshing out/wrapping up the story and characters.
I did answer this question before, so I will summarize. Basicaly in the VN, humans are little sheep, they can't fight monsters at all, also it's hard to take a grip in what is monster girl society (someone must keep the monster lord castle working, and that require money and manpower). One exemple which I will fix here in this version 0.2 is Granberia attacking San Ilia Castle with ease. If she can do that, there is no way a war can exist, because if she destroy that place and kill the Pope, she would make the humans disorganize, destroy their economy and their way to fight back. If you destroy their way to fight back, nothing stop the monster girls to enslave all mankind putting an end to the semen shortage, polution, etc. Each monster girl could have 2, 3 slaves, and there is no reason for Alice don't allow that to happen, it is in the best interest of the monster girls which she vowed to protect.
There are other minor things like Luka defeating a Queen alone when he barely began his quest, Alma Elma attacking a ship and no one lifting a finger to stop her (it's a ship in the middle of the sea, Did they think they could run away?).
There is many explanations missing in the VN as well which I will try to fulfill here.
I also am changing somethings which aren't plotholes, but that in my opinion it's better the way I'm making, as well some additions, quests etc.. I'd suggest you play to see what I mean, but I do suggest you wait a few more days before trying, since I will launch the version 0.2 soon, it's already being tested and will go until Sylph.