Well, the issue I see is that Houses are ruled by a group of people who can wield their power like little gods in this world. If they want to deny someone new, they can— even if the approval should align with the laws. They could come up with reasons that don’t necessarily violate RP but still feel inconsistent.
Going to an admin every time something like this happens would make RP boring, as people would exploit it. Yet, there is no independent 'ruler' to limit this. At least, that’s based on my past experience. Maybe things have changed. I guess it’s up to me to find out and give it another try.
But I hope I won’t be disappointed a second time because I really think it’s an awesome game. After all, it’s the people who make the game truly great.