At the moment, the Levarian Officer's Sword doesn't work right, constantly staying "sheathed", but like I said, you clearly know about it. Aside from that, I once got a non-crashing error message in the Arms market about a "flamberge" not loading. Should have wrote down exactly what it said. And some 2h swords (The Scimitars come to mind) are using 1h attack and defend animations, but I can just attribute that to my character being that badass.
As for colors, well, I'm feeling charitable, I'll donate my little list I use for personal modding.
16720418 = Red (Used on factions: Outlaws, Robber Knights, Black Khergits, Deserters, Mountain Bandits, Forest Bandits)
65535 = Cyan
16711808 = Magenta
16744448 = Orange (Used on Kingdom of Levar, works well with Velar being yellow)
8517505 = Sea Green (Used on the Elves, might be too blendy)
9063176 = Brownish Orange
9046024 = Deep Red (Used on Morte, works well for them)
6359902 = Purple
I haven't thought what would be good for the Orcs, though. Might want to give them the Goblin's color and then give Goblins either a non-green, or a much lighter green.
New Post: I'd recommend making some of the lower-end Dark Elvish stuff, wakizashi and whatnot, to be purchaseable, but I do agree that samurai armor and no-dachi, katana, etc should be a drop of some kind - if not ungodly expensive in the markets - but regardless of how many I killed, I never had any as a drop. During one point, I literally got a shorten military scythe per dead deserter in one battle, ending up with about 16 of them, despite their rank (and in the battle) carrying katana and wakizahi (I believe they were all Descending Fighters).