Try to build the Guild with all the players willing to give a hand and, as i already PMed to you and Sheppard, try to merge. This is the good path to be THE BH Guild. Let the door open to non taged BH. Use the Registration made by R. Fitzgerald. Build a Job board easy to read and updated daily (trough a shared forum account).
Keep the rule of honor (read fairplay) : no bounty can be claimed if the class ship of the BH is superior to the actual target. If pirates IDed are the most hunted then we will see more BH in fighters and gunship.
I'd like to say that the problem is not the Guild itself but the way to have regular contracts. The more we have, the more the bounty hunter Guild need to be organized. At the end, you will give to the Guild herself the organization needed to be feared and respected. While the customers remain the key to promote the Guild.
In a perfect galaxy, we should have one player faction to represent the Guild Core and one organization open to all BH sharing the restriction of the Bounty Hunter Guild. The guildmasters (leaders) have mainly diplomatic and administrative functions. They offer services to other Bounty Hunters, centralize the contracts and take their cut as a service fee. Only the Guild Core can look like a clan/group. They are dedicated to a war purpose. It is where the need of warships appear.
Take you time to build a communication center on the forum and on the server. It will work.
We all need to see far above the clan and think like being already in a faction that just need a structure. I really think that such a BHG faction proposal could become the perfect exemple of what an open faction should be. The reality is that you will sacrifice your time for all the BH player characters. So think about a council or a shared leaderships in order to share the responsabilities and the pressure.
And for the tag ? Someone will take the tag if he is ready to to be in charge, not to join a player faction as all BH are, by definition, already in the Guild. But i bet that if the BH Guild become influent, most characters will take the tag, and most contracts will be given in priority to the Guild.
Oh ! You are missing the most important word in your tag : "GUILD" :)
I really hope that what i suggest will awake some players who want to work together. Communication, exchange between dedicated players to the BHG can promote something big, really big and never seen before.