Adjust the coffins on Red and Gold so that anyone can enter them but have them behind a paydoor. Charge a reasonable amount for entry. New characters don't have to pay.
I think this could be good for two reasons.
One, theme. If you want to play a PC who is down on their luck and can't afford a cube even. It just gives players more options for housing that might fit their character.
Second, and to me more importantly, a way to store your character for longer periods. If I know I can't play for a couple weeks I can tell people I have business out of central then go into the coffins (paying the fee). Now my roommate won't have to pretend they don't see me every day. My character is tucked out of the way.