Again I got more idea's.
1. Make portals like the portal to Las Noches (Or Hecuno Mondo). But not teleport or summon. Only travel and Portal. It makes 2 things. A: A nice hideout. B: actually have to do something to get there (could be like activate portal and when you click F to enter you get tp to the black thing and have to run/walk throught it
2. Make Las Noches.
3. Make It (If Las Noches and Soul Society are made) so Soul Reapers live in Soul Society, and Hollows live in Las Noches (They get there on building if they are espada/captain.