Charlotte's animations need tweaking
You can really tell her animations were only made with her default skin in mind, most notably her default weapon. Her pallet/wall break animations and her weapon bob work well for her default sickle due to it's large size and shape. However, it all looks really clumsy or even downright sloppy with any other weapon equipped. The pallet/wall break animations don't really make sense (how do you break a pallet by hooking a shovel into it?) and the weapon bob is too exaggerated for her other weapons. It's really noticeable with her Blood and Guts weapon, which doesn't seem like it even has proper physics applied to it because the chain attached to the weapon just flies all over the screen.
I know this may come across a bit nitpicky and I know The Twins were very challenging for the animation team, but I think adjusting the look and feel of Charlotte's animations to feel a bit more natural would make her feel better to play.