Regarding the Sith Armors don't restrict force powers request, I have a personal mod I've used for a long time that changes Exar Kun's Armor, Ulic Qel Dromas Armor(in K2 and K1 if restored), and Darth Bandon's Armor (in K1), to not restrict force powers (and edits the descriptions to match the K2 Jedi Armors verbiage).
I personally haven't had a strong desire to nerf the armor as well (though I'm not opposed). The thing I really dislike about the K2 Jedi Armors is how absolutely horrific they are. Some of this is just Battle Precognition breaking the game, but the armors themselves just have extremely low defenses, compared to the attainable Dex values with Robes. K1 doesn't have quite the same problem (your Dex isn't likely to get over 40, while 50+ is not out the question in K2, nevermind adding Wisdom on top of that with battle precog)
The Qel-Droma robes are already +5 defense and +2 Wisdom, which is very strong, and have no Dex restriction (and Darth Revans and Star Forge robes are both better, but so late I won't consider them). Fully upgraded, Bandon's armor is 7 defense, +5 max dex, and some fire and mind affecting bonuses, Ulic Qel Dromas is +8 defense, +4 max dex, fire and cold bonuses, and Exar Kuns is +9 defense, +3 max dex. They also all require armor feats (Exar Kuns will require medium and won't be available to scoundrel players, while the others won't be available to jedi companions without a feat, so this is mostly affecting the player)
Assuming you are under the affects of valor at all times, you would have a constant +5 to Dex, and Dex adrenal can add another +6, you are probably not pumping those constantly in K1, but for important fights you can use them. If you were invested heavily into Dex and had 20 base, with another +10 from items, at the end of the game, that gives you a +15 modifier, or +12 without adrenal. That would give you +20 defense in Qel-droma robes (+17 no adrenal). Exar Kuns armor obviously caps out at +12 no matter what, and you can conveniently set your Dex at 11, and go into strength. This is overall proabably still better (though your maximum defense will be lower and you do not get the +2 Wisdom) because you can focus Strength for damage. (I know that there are other issues with the effects mod cap which will reduce the value of defense bonuses, but increase the value of raw armor defense and dex mod, but that's too complicated and probably washes out anyway)
I do think there is a place for some nerfing of defense values, but I don't think Wisdom penalties and the like are right direction imo. Wearing Armor as a Jedi should be a valid choice, and it absolutely isn't in either game now.