Let people switch between realms, no need for 12 hour timer, make it 3 hours or somewhere in between. However, introduce "realm pride" bonus to RPs, BPs, XP. Each day you stay in the same realm you get a percent upgrade to the overall counter. Maybe in a month of not switching - player gets around 5% boost to all. Argument that this will make RPs much easier to get for those that stay in same realm is not very valid since there are so many easy ways to get RPs now anyway.
"Realm Pride" award is real, makes you stay in the realm, award players that don't switch and true to their realm community.
"Realm Pride" award is real, makes you stay in the realm, award players that don't switch and true to their realm community.