I'm the faction leader for the RHA, and though we're still a small faction (and poor...), we're working on it. Thanks to the three new members we've gotten recently, we've become active again, too.
However, more Hessians would definitely be welcome, even if they're more the "common Hessian", i.e., simple pirates, rather than the RHA "old school" revolutionary Hessians. Because in Rheinland, the RHA has very few allies...there's only one LWB player I've ever seen, and the Outcasts rarely venture so close to Corsair territory unless they're going go attack Gamma.
But, if you want to fight a lot, Hessian is the way to go. We're one jump away from a primary Bounty Hunter system (Omega-15), and have bases in three systems that also include a major Corsair base; and we're close to Gamma, and there's always lots of Corsairs to fight. From what I've heard and seen, Hessian might be your best bet. Always lots of traders coming through Rheinland, as well.
Only thing is to be sure to get your RP set up; looks like that's what you're doing, and it's good to see. I'll be keeping an eye on this topic as things develop. Best of luck!