Okay, so I am looking from the outside in. I have yet to do a group game here on E (Did I mention that so many people in one roleplay makes me stressed?

) so I will give my opinion from an outsider of sorts.
Pros:- Wonderful game idea. I think that you could get a lot of good people and I think the idea is a good one.
- LGBTQ friendly means that anyone (Lords, Ladies, Lieges and Legates) can feel comfortable posting.
- Slower pacing means that people don't have to worry about getting a post out every day and falling behind. However, I am not good at knowing what time courses work the best for group roleplays.
- Equal gender distribution means that there isn't 10 guys and 2 girls or vice versa.
- Extreme solos gives everyone freedom but everyone can choose what levels they are okay with.
Cons:- I agree with Gypsy that the post length could deter people. I completely understand that you want people who post more than 2 sentences in the game (that would frustrate me for sure) but I think it could deter people. I am not sure how you could rectify that... perhaps saying that you prefer longer posts than a short paragraph?
- The amount of people/writing two characters can deter as well. But if you are looking for 14 characters at first, that is only like 7 people (6 including you) so that isn't much. But I think you should encourage people to write more than one character but I don't think it should be a requirement. Some people like to dedicate all their energy to one person instead of spreading themselves too thin.
- I also agree with Flower that the requirement for games is a bit too much. I fully understand that you don't want to get players who post twice and then suddenly lose interest and drop out. I think one x ones help a lot because like Flower said, group games die a lot. They go super strong and then just like... fizzle within a month.
Questions/Suggestions:- What other characters can be introduced? You mentioned guards but what else? Housekeepers, delivery people? Will they go outside of the manor and interact with people (I see that it says about not being easy to get out of the manor)? I think there might need to be some additional characters needed outside of the vices and virtues.
- Remember that some things might need to be changed as time goes along. Post length/posting time can change and might need to. You never really know what works for the group you have until it gets up and running.
All in all, I like the idea! I hope my post helps you out. I wanted to show you both pros and cons of the way you have listed it now. And just some things to think about. (: