Thanks heap for the info. Haven't looked at the new Osprey yet, but I think you're right about it being by the same author.
I'm agreeing for the most part with you about the helmets. Most of the helms in the mod will be from the Middle period, as I'm shifting the date of the Trojan War back to 1350 BC (for gameplay reasons, no historical basis for it). Will have to do more research into horned helmets before I make a decision on it.
The info on the Thracians is quite interesting. Particularly the reference to the "massive Thracian sword". Considering the Illiad was written before the appearance of the falx, it may be another one remnant of the Bronze Age within the story, like the references to various shields and helmets etc. It may also just be poetic licence. From the top of my head the only thing I can think of that comes close to that in Bronze Age Europe are the halberd/axe/sword weapons from Denmark.
As to horse riding, I'm fairly sure there's a reference somewhere to Ramses the Great having a contingent of either Nubian or Lydian scouts mounted on horses. So there is definitely some scope for very light cavalry.
I'm going to change my Locrians to match that description now. As to ethnic groups singled out, I'm considering adding sailors to the roster for Pylos and maybe Ithaca. For Pylos, it's based on the Linear B records requesting men for the ships. I'm considering adding them to Ithaca simply because at times, Odysseus feels like a king of pirates. It also makes sense considering it's an island kingdom.
Most of the info on the organisation I had, although I'd missed the term promachos. I think I'll use that for lesser lords.
I'd love it if you'd PM your work on the Luwians. I know next to nothing about them, and the more I have the better, regardless of whether you've based it on conjecture.