the only giantess that i can recall that lives in the neutral territory is bel from guest characters so we should get to know how it is to live in neutral territorys in a couple of years after the main game is doneThe neutral territories definitely are a bit lacking in the writing department, I wont disagree with that. That said, I was talking about just the giantesses, which there are none associated with neutral territory, and because of that it's unlikely we'll ever get a super deep dive into them, given that we only learn about places that have giantesses associated with them. I definitely agree that neutral territory should be expanded upon, because they drop hints that it's deeper than "here be people you can squish with impunity", most of all in Eliete's route with the guy- at least the way I interpreted it- so traumatized, so filled with (understandable) hatred towards giantesses due to their overwhelming might that leaves a grown man impotent and helpless in comparison that he just wails on her foot with a sword that can't hope to harm her, just to try to take some bit of power back. So long as no giantesses are associated with it though, I doubt it'll ever be developed too deeply.
As for Seinaru, I like that too, but I think that Helga does it better, with how she words it too- when MC asks what the point of even training is, because he can never hope to match a giantess and she replies "I could never hope to match a Guardian, but that's no reason not to push myself to my limits- besides, you can do things that I never could, like chase a thief down a narrow alleyway." She's so endearing and upbeat, and inspirational too it almost makes me want to haul my ass to the gym and get some gains for Helga.
As for the Vai'klis comment, was that a vote or something, I'm curious what you meant.