I actually think you've hit on why they stopped at 90 with your mention of the lobbies. I wonder if having hundreds of players in an instance without a ton of resources tied to it caused problems.
That's so true. Even something as simple as being able to instantly relinquish for the 80% would help a small bit. Yoshi mentioned something vague about ishgardian housing and transfers (I need to find the interview link), so maybe they are working toward this. I can hope right?
