Well I dont know.. .I was asking. I'm still trying to figure out the distinction between the two.
I thought Fi was about feeling emotion internally, recognizing internal emotional states in others on a one-on-one basis and wanting to do something about it.
And my impression of Fe is that it's more the ability to sense the mood of a group and embody that mood, and just being able to express emotion well in general.
And yes the Ego vs Id functions--I think the distinction between those rests in intent, i.e. an EII or IEE might happen to use Fe in the process of trying to reach their Fi goal or carry out their Fi action (translation: happened to smile/laugh trying to make someone feel better), whereas an IEI or EIE in the process of trying to reach their Fe goal happen to achieve some Fi along the way (happened to make someone feel nice because of a smile/laugh meant to embody the group's mood).
I could be wrong or off. . .I'm admittedly a noob. this is my understanding currently. Please correct me if i'm wrong, I'd like to learn. . .