On Pit's and Palutena's relationship, I keep believing they have it completely platonic and even deep- also just genuinely heartwarming, with comical tendencies.
Palutena can be her true self around Pit (to point of teasing and messing with him), while Pit looks up to her in many ways, and a lot of his strengths and defining moments of awesome is only directed by his sheer dedication to her alone.
Both are inseparable, even through the "apparent" betrayals (Chaos Kin Palutena) and death (Burned Wings Pit): they always will bring each other back together (Pittoo doing the whole thing for them once, but yeh).
Even first Kid Icarus ran on this in means of story in my opinion.
In anycase, it's pretty humane and very humoristic deconstruction of the whole "BodyGuard&Empress"-relationship, feeling quite heartwarming as so: they both enjoying each other's time going so far as to parody those tropes for sake of it, while giving us plenty of laughs and feels to watch, making these two such lovable characters today.
For example, Palutena hinting at Pit bringing the coffee like some delivery dude while he goes straight to how she likes it with is certainly funny to imagine but I know it's something both don't mind really doing because they like each other that much and enjoy good time together. Like during mornings, hahah.
Quite makes me think relationship between me and my sis who's now away at somewhere in Africa.