However, if we look at the history of the Forsworn as shown in-game, there are massive contradictions and logic pitfalls.
For instance, "Madmen of the Reach" states that the Forsworn are infact several thousand years old, and have resisted Nord rule for all that time. Fine.
Now go into Markarth and do "The Forsworn conspiracy" [Spoiler alert, do not read ahead if you haven't done this excellent quest].
The Forsworn turn out to have a king, not only that, they have infiltrated the upper class of Markarth, and many of the workers at the smelters in Markarth are natives of the Reach.
Madanach, king of the forsworn, is anything but a fur-clad savage. He adresses you in a civilised tone, states his arguments, and tries to convince you to help him. Likewise, Nepos is completely civilised and lives in comfort surrounded by equally well-spoken Forsworn in Markarth.
Now you may say "Whats the point of all this?" and it mostly comes down to one thing: Steel.
If the Forsworn have lived in the Reach, resisting Nords for thousands of years, and if they have infiltrated and integrated into Markarth and have people working at the smelters, why is it that two minutes down the road from the city gates, we are assaulted by scantily-clad barbarians using rocks and bone? I refuse to believe that the Forsworn have not developed Smithing techniques over thousands of year in close contact with Nords, especially since in several Forsworn camps we see forges complete with ingots. Yet the visual style of half-naked savages persists. Its jarring, to say the least, and especially if you take into account Skyrim's climate, since most Forsworn armor looks like it would belong in Fallout, not a tundra.
So, to remedy this, I request that Forsworn Armor and Weapons be remodelled, and re-textured. That alone would serve to bring much needed realism and logic to this faction.
I myself cannot mod, I lack both the modelling and texturing skills, but I thought I would post my thoughts here, incase it caught the eye of any skilled modder.
As for what to replace the current Forsworn style with, thats largely up to the modder who undertakes the task, but i've given some thought to it.
Skyrim's armor and weapons are largely influenced by Scandanavian/western european armor styles. If the Forsworn are a seperate culture, it stands to reason that the style of their armor would be different. Forsworn also seem to shun long-term settlements, preferring to pitch tents in ruins and near caves. For this reason, I would love if someone could put a Mongolian flavour on the new armor.
Some examples;
http://cdn1.iofferphoto.com/img/item/117/926/637/LPXUm1A6g59Cd2J.jpg
http://imageshack.us/photo/my-images/34/mongol01.jpg/
http://www.newyorkcool.com/archives/2008/June/Images/film_mongol1.jpg
http://cdn1.iofferphoto.com/img/item/117/926/637/VF821RQ84cCUa5H.jpg
The above examples show the range between clothes, to light armor, to much heavier and rarer variants. I think that these would fit well into Skyrim and the Forsworn, as they are very different visually form a lot of the other armor in-game, while still being practical and suited to a cold climate. Once the armor and weapons are changed, there isn't much else that needs to be done. Forsworn settlements are tent-based and littered with animal sacrifices, but this IS part of their culture, so doesn't need to be changed. Thank you for your time.
TL,DR: Forsworn are visually silly and hypocritical, replace with something more functional and cooler, like Mongols.