Please consider raising the house sharing cap. Originally, people were saying it was five but it turned out to be only three...
I don't think raising it to five (or more) will have a negative effect. Instead, I think it'll have a positive one. The more people that can share the better for the community, in my opinion. Of course you can share a FC house with a large amount of people(I have a FC house which I am "head of decoration" in). But I don't see the harm in sharing a personal house with a lot of people either. The only differences is we don't all have to be in the same FC and we can ALL be close friends... which is not always possible in FCs.
I know some people will say that the more people you share with, the higher risk of furniture being stolen. That might be true, but that same risk exists with FC houses. Why should that only limit personal housing?
My personal reason for requesting a cap raise is because picking only three of my friends to share with has caused drama. While five will not solve my problem completely, it'll still help somewhat alleviate it. I bought my mansion(note: with 100% of my own gil) so that I and a few close friend could put our heads together and create something special.