DarthParametric

The tools aren't developed enough yet.

Modding is not practical right now, so there's nothing specific to MEA to learn until the tools are finailised.

If you are talking about editing the game assets (changing textures and/or meshes), then that is a different thing. It should be feasible to edit textures in the coming weeks, but meshes are probably going to take a while. And if DAI is anything to go by, only minor tweaks of existing meshes will be feasible. I wouldn't get your hopes up about radical changes being possible (i.e. don't expect character mods like in Bethesda games).

No, your character appearance is stored in your save file. What you are seeing there are references to asset data stored in other bundles that is used during character creation. Gibbed has an empty repo for a MEA save editor, so eventually he may release a tool that will allow you to edit your character's appearance. I would suggest though that something end-user ready is probably months away given that he hasn't finished his main MEA tool code or (seemingly) even started work on the save editor yet.

You can't just swap them, that's not how it works. The model would have to be resized and repositioned to fit the male head, and skinned to the male skeleton. Based on the DAI tools, importing a custom mesh like that may never be possible. You'll need to wait a couple of months to see how the MEA tools develop. At this juncture, it would be unwise to expect more than was possible with DAI, which means at best you could manipulate the vertices of existing meshes. In practice, that pretty much means no long hair for males.

No. It will probably be a couple of months before the modding tools develop sufficiently to make the attempt.

It's not possible yet. Once functional mod tools are available at the very least it should be possible to hide the visor section with a texture edit. Physically altering the mesh to hide (you won't technically be able to remove, just shrink and put inside her skull) the whole thing may take a while.

On Frostbite the patches are additive, meaning they don't delete/replace the original content, they are in a separate folder and simply override the original content (this is how mods worked for DAI, hijacking the patch system). The original head should still be in the base PC content as well. If the two head meshes have an identical vert count, then it's probable that eventually they could be swapped, as was the case with DAI. It seems to me like the revised head is just a slightly tweaked version of the original, so chances are good this will be possible at some point.

The first thing I thought when I saw the helmets was that the visors were too transparent. I initially suspected that they may control the level of transparency in a shader rather than via a texture alpha mask. I'm still waiting for the tools to develop a bit before I can check the textures to confirm, but browsing through the game files with the current build of WarrantyVoider's MEA Explorer I can see that the helmets appear to have a visor mask texture, for example like the pre-order Deep Space helmet: http://i.imgur.com/sTGsar2.jpg Seems promising, but we'll have to wait a bit before it can be tested/confirmed.