War Bow is a semi-automatic Sniper Rifle.
Long Bow is the bolt-action Anti-Material Rifle.
Strong Bow is the Assault Rifle.
Khergit Bow is the Squad Light Automatic Weapon, or perhaps better yet a PDW with a large magazine (like the FN P90) if you MW it (insane output on arrows).
Nomad Bow is the cheap knock-off, perhaps a real PDW. Pretty useless in open field battles, and good as a hold-out but going to make you wish you had a better bow in close support. Good for run and guns, maybe... You will wish you had brought a shotgun (xbow) instead for emergencies.
Bow is like a MAC-10 if you masterwork it, and pretty damn useless just like the real thing (why not an MP-5K?).
Short Bow is the automatic pistol that you bought against your better drunken whims... but good as a nice start to figure out how to shoot. Easy to waste ammo on though, a nice starting bow.
I think we really mainly need an alternative PD 5 bow and an alternative PD 4 bow for extra choice, like how there are currently two PD 6 bows. But yes, a small tweak to the Strong Bow would be good to make it slightly worse, either a 1 point hit in damage for both the Strong Bow and Long Bow or slightly less accuracy for the strongbow, or make the War Bow do one more point. I dunno...