Let me restate this from the beginning to remind the perspective:
"A trend you might notice here is that I'll point out these are only weaknesses in the perspective of the girls (And by extension, the series as it's from their point of view) when its depicted as an advantage by Kyubey."
- The soul gem, which is more durable than the rest of the body (Cite Magia Record and the Homura feat above), is their 'true self'. Technically, their human bodies would be the 'weakness' here, as it would be weaker than the soul gems (Of course, the bodies scale to all the feats so not sure it matters). But, like I said, I'm okay with it being added as a weakness. Just add context (Higher durability and can also be hidden as a ring)
- Possession, again only a weakness from the magical girl's perspective since they like their bodies. Say it was any possessor who had a limited range (So basically everyone here, unless they have omniversal range or something), would we treat it as a weakness or a range feat? Espically considering we already have profiles that
do.
- The corruption. Again, only a weakness by a magical girl's standards. Heck, another being on this site with similar stuffs, Moon=Millenniummo, just notes it. And that's ignoring the fact that it would take days for it to actually happen (See Sayaka) or at the very least,
a battle with a brick wall while suffering from extreme teenage angst, (Not including the stuff she did in time stop), it's not gonna happen. Goku dying from his accelerated metabolism would be a more legit weakness since it would at most take days compared to a week.