Once again I’ll reiterate: he has already gone past that point. He is literally getting cross continent contracts by the guild on special order, what do you mean “Keep his head down”?! That is part of the frustrating aspect: why won’t he just say something lit “It’s really my familiars who do the work here, I’m only the handler.” that would be character development becasue he is taking the position of assigning himself a role, he is actually saying something. “Being content to wander around” is “not changing”, and simultaneously “saying nothing”.
As before he is buying new things from the market place, but not even thinking or planning about what things he can buy “Next”, thus he is lacking agency. So long as he is in this party and under the eye of the gods he will not live a “peaceful” life, but an actual character would then say “Well if this is the life I have to leave, what does peaceful actually mean in this world. I’ll strive for that”. Or even something like “Hey I want to be ‘bothered’ as little as possible so can you guys help me in a way where the threats of the world don’t even register for me? My heart can’t take it.” This would mean that he has a stated goal in a way of life, and there are stakes for the people around him. They “fail” if he gets “disturbed” and that is something that can happen despite their OP stats, right?
We need an actual statement out of this character. We need an actual character! Right now, he’s kinda like an item: has a function and is ever-present but unless being activated has no practical use or effect.