I've know a lot of couples over the years where one of them is very happy in the orbit of a stronger person, the examples I'm thinking of are all stronger women with doting man in orbit. And of course we've had millennium of literature with the opposite portrayal. Though I make fun of Chakotay I don't think this relationship pattern is in itself dysfunctional for everyone. If his comfort zone is of being a carer that's fine. 7 is incapable of taking advantage of that, probably his biggest struggle will be getting her to accept the care in the first place, as it sometimes is with Janeway. As to what happens to him afterwards, well I'll go with the books.. he breaks up amicably with 7 and he and Janeway hook up. Hopefully now that no one is dead any more they will drop the Chakotay nervous breakdown storyline and everything will work out.. but I think she will always be the alpha partner and he will always be in a carer role who relishes being in orbit. And maybe in the 24th century that's no longer a subject for mockery.