my main criticism of this: the pacing of these fetishes themselves and the pacing of a high school dating sim don't really fit together. it almost requires a "one night stand" kind of setting. I understand how it works with expansion being a part of puberty and girls getting bigger over time, but I feel like there are plots more appropriate for the unique concept of expansion than that of literally every single other VN.
on a related note, there seem to be two major camps to "expansion" (I'm beginning to loathe our use of the term because giantess and muscle growth have almost always been considered unique from expansion) seems to consist of two camps; the "shape" camp, who derive beauty from the fetishized form itself, and the "body horror" camp, who are more interested in the fear/disgust associated with bodily tranformations. these groups are neither strict nor exclusive, but I've always leaned much more heavily towards the latter, and thus am a bit biased against how the story is being made so far. Getting really fat/big boobs/whatever being treated as a safe and expected process of a girls life, integral to herself, and even enjoyed and cherished to a certain extent just seems so boring to me. I'm sure this isn't the case for all of the girls, but either way, they have a lot of time to cope with it.
Finally, I don't really wanna stir up shit here since it's already been stirred plenty, but you guys should at least include a body inflation and/or blueberry side character, considering you need more than 6 people for a high school and that both of them have been requested constantly, even more than some of the love interest fetishes.
Anyway, that was my essay, consider what I said or not, idgaf. It's your guyses project and you're doing a great job so far.