I mean, an overweight adventurer doesn’t make much sense, as the process of daily walking long distances, regularly fighting, and living off travel rations would naturally slim anybody down quite a bit, but the list of things that don’t really make sense when you think about them in Dungeons and Dragons is pretty long so who cares?
That said, the chances that they are adding in heavier body types is pretty low. Those who want to play characters with a power lifter build will just need to do what they’ve always done: play dwarves.
Of course, we don’t actually need to walk a long distance each day in EA and there’s
tons of food just lying around so no need to subsist on travel rations
. Plus most fights are over pretty quickly from the perspective of a single character, and aren’t necessarily physically arduous for every class anyway.
But as you say, picking at the realism on this specific point isn’t really here or there anyway given the setting. And I agree that unless Larian have already secretly added this, we’re unlikely to see it at release!
