Firstly: Its a nice idea to include the messenger from the books as a new hero or mini-hero. What about giving this hero a dwarven expression in khuzdul instead of a name? I am agree, that the iron hills should have another heroand the pictures are really interesting.
It would be better if you work on to give this hero some uniquenes or something like a special role. Personally i think the iron hills need a hero-killer. ThorinIII is something between a tank and hero-supporter with only on damage-ability.
So may be I ahve a suggestion!
With the "New" Design for Thorin III he really looks like a Strong and Skillfull Young Dwarves Prince/Warrior and Heir of Durin so he may become the Hero Killer(but keep his Runes) with some Tank Features,while Lord Dain who as Dwarven Warrior in his prime and arguable the strongest Dwarf of the Third Age too deserve a hero Killer Role(but he can't have all) may become Unit Supporter with a Mass Slayer ability because some fans thinks he needs to display more his great skill in Combat like he did in the Movie and in the Book too,if you Ea think that it is a good idea please do tell me and I have a suggestion about new Ability for him!
While "Narin" (which is name Dwarven Khuzdul name) canhave the name Amrad(Meaning Death) or Galabi(Meaning Word,perfect for hims a sor of Diplomat/Messanger) who can be Hero Supporter in Iron Hills!?
So what you guys think about that!?