Probably better off looking for other ways to encourage RP between people. Families obviously are a big one. Factions another. Dominions another. Events, Character/Social Development. Fleet/Ship Dev, PVP another etc.
Just keep adding to that list. Trying to define a few new ones that fit universally as concepts, for others to then run with. I know these don't come up overnight and are trial and error.
Let's be honest though, people still earn respect from roleplaying with others. It means a lot more than any rank tag ever will under the avatar, pretty as they are to look at.