Actually, generally it's common to have high poly counts on cosmetic items such as hairs in most games and mods. Especially in games like Sims and Oblivion, which is where these hair models were originally intended. But since this is warband, the poly count becomes more of an issue obviously. However, the modelers were in fact great at texturing as well, and gave lots of their time to the communities they originally invested into.
As said, these models were not intended for a game with numerous amounts of NPCs on the screen at once, nor was my compilation of these mods into the game intended for that. I made this primarily for players, especially for those who love Single player.
As for the alpha, I believe that's the game engine, as the textures for the hairs, as well as the UVMapping is correct, however, when used in the game the texture looks extremely rigid. I'm not sure if there's a way to fix that.
But yes, the hairs are high poly, not due to lack of skill, but due to a different intention for their placement. Personally I only play SP, so I enjoy them without problems, as I don't plan on having hundreds of NPCs wearing hair with thousands of verts.
As for a program to reduce the models polys and such, a link would be very welcome. I'll see what I could do if it was provided.
As for their being multiple people working on this, that is solely because the original textures could not be implemented into warband due to its engine. Only one hair texture can be used for all hairs. So I HAD to UVmap them again in order for it to work, and the texturer is Talesworld due to this. If I had discovered a work-around so each hair would utilize it's own texture, I would have done it immediatly. But the sole reason I learned UVMapping was because that was no option.
Thanks for the comment though Caba`drin, I'm not a modeler nor ever used these programs until now, and that was simply because I wanted to port something. So my experiance in this department is near none. But, I'd still like to learn how to reduce polys so more people would be willing to implement them at their leisure.