I've noticed that I need to make the RP opportunities and provide them to other RHA pilots as well. I sure enjoy pew pew to some extent but that's not why I fly RHA. I make a good use of the shared ships we have in our disposal. Take the transport or the miner for a change. Or the repair ship. And people in RHA and around Rheinland are very willing to play along with you. Or I just go occasionally pirating the people and spread the RP gospel of frei Rheinland. Or take out that RHA cruiser and go patrol the systems.
The point is make your own fun (come up with ideas) and other's will gladly follow and contribute to it. This is by no means restricted to RHA but applies to every faction. Doing the same thing is boring in the long run.
So check out the shared accounts and give them a try. Especially if you are the only one online you'll end up RPing a lot more than with the group. The group sessions are always geared up towards a battle at some point. It's fact #1 in Disco.