10/10. The idea is interesting, even though weight gain stories aren't my thing. Glad instant gain isn't allowed, since that seems to be what most weight gain stories on here relai, or however it's spelled, on. Water-what? No clue what that is. Is gaining some weight via pregnancy allowed?
Excellent idea here, though shrinking stories are something I'm not quite use to, but, I'll try it, if anything comes to mind. Nice set of rules. Any rules for how shrunk characters are treated, example, can they be treated like dolls, babies, and so on? 10/10.