Everything you requested is already in the game, as mentioned, except for changing appearance (edit: and class) mid-game.
That can be achieved unofficially with the save editor (edit: for PC). You can make a new character, export the head morph, and import that in your current playthrough.
You can't change anything on the Xbox One?
@Oldeshooter I'm playing on Xbox One and I was able (as normal) to change Shepard's appearance and class when importing an ME1 save to ME2, and again from ME2 to ME3.
I need to install the 2 and 3 and then try it.
I installed both Me2 and 3 and created a Femshep in 2. Is there any way to get her backwardes into 1 from2?
