Is there a mod where female characters (PCs and NPCs) wear male versions of all armor in the game (since I don't like the stereotypical "briast/boob armor" found in most games such as this one)?
That mod should be easy to make once we have the toolset, and a bit more tedious just using TESsnip. (Simply delete the nif entry for females)
Light armor is okay, but there are also a lot of clothes that turn into gowns when a woman wears them. Variation is the key here. You should have the option to wear "normal" armor as well as one custom made for your cup size, and when a man loots a woman for her custom made armor, he shouldn't first take a hammer and flatten the boobs, and if he puts on a woman's gown it shouldn't magically turn into a suit.
Aesthetics aside, an armor should be tight fitting and comfortable, unflexible armor for females needs extra space for female assets. This extra space doesn't need to be formed anatomically correct, though. Realistically seen, it's wise for a female soldier to blend with her male comrades. And while we're at it, men should wear skirts to keep their testicles on operating temperature, while women should wear pants to protect their shorter urinary tract from infections.