Title says it all really. There and Back Again gave a number of new units and altered existing ones. Additionally, some of the new heroes may have special rules that could be incorporated in Battle Companies, on top of which there are the army special rules that are worth considering. Of course, BCs are always purely from their own particular list, so would you automatically include the extra rules, leave them out entirely or add them as a special rule that can be unlocked by a hero in the list?
Some things on the various warbands:
-Thranduil's Halls. Can probably stay as it is, the extra armour doesn't change too much and all level-ups remain sensible.
-Lake-town. No new units, but Hilda's and Percy's special rules could be worth considering for heroes.
-Gundabad. The new Berserker would replace the near-identical Brawler. Goblin Mercenaries could be included here, or in the Goblin Town list?
-Iron Hills, the big one. Surely deserving of their own warband, although they have few options. It could be based on the current one, with basic Dwarf Warriors, becoming Iron Hills Veterans, becoming the proper Iron Hills Dwarves. Stat-wise a logical progression, but their shieldwall special rule is fairly pointless if there are no or few others around. It may then be worth skipping the Veteran step, going straight to the IH Dwarf level (with crossbow for archers). It would feel right to insert a promotion between that one and the very powerful Goat Rider, although I suppose many other troops (Mahûd, Black Númenóreans, Dol Amroth) also take the 10+ points leap in a single promotion. Various special rules of Dain and the captain would again make for fine option in this company.
So - has anybody given any thought to this yet? Ideas?