Technically you don't need texture mod for any of them but I find ME3's spider lashes and ME2's greyish-black hair distracting. As for ME1, I recreate her from a ME3 picture but you can convert the code into ME1 slider. You can just use the face code directly to ME2 and this is what I came up with. I sort of retro-create my Shepard from ME3 so she could be consistent throughout the trilogy. If you find that a hassle, you can just use Gibbed and import this headmorph directly to your save file. I do use Texmod to fix eyelash texture in ME3 but generally I use Gibbed extensively to adjust her eyes manually because the normal feature clips a LOT and I use a hair style that was hidden in the game.
I use very minimal mod for her and this is the version without any texture mods.
