I think he's more toned down than most 4w3s (also because of sx-last). He's a bit of a contradiction because he has this desire to make connections and be included but he also wants to define himself as different than everyone else. Fe + so-first makes him want to be helpful and nice to others making him seem 2ish but he expects to be remembered for it. Okay, at this point let me just say I'm a bit biased because he's been my friend for the majority of my life and I can get real sick of his melodramatic shit.

Anyway, he expects that if he's helpful and nice to others that people will see him as a special person and make him feel special for it. My problem with it is that he's actually pretty formal and held back and pretty socially awkward so he actually sucks at making himself distinguishable from people who are more engaging with others and his approach sounds really contrived. I guess it's the whole 4 frustration with not being adequately parented, expecting others to nurture them.
That probably wasn't very helpful but I tend to ramble when it comes to him.

Any specific questions you have in mind?