One thing I'd suggest for the animations is making her more expressive during some of the finishes. For example, when the single worm climaxes in her she's just looking up with a too neutral expression like "oh, this is happening now" lol. It looks weird considering how concerned she looks immediately beforehand.
As for the egg-laying scene, maybe add a few looping frames of her struggling to push it out before it finally gets through? An ounce of anticipation leads to a pound of satisfaction.
On the gameplay front, maybe add a more immediate way to do crouching attacks? Perhaps down + attack could just give you immediate access to the crouching swing rather than always having to crouch first.
I also echo another commenter's suggestion of cum versions for the gallery pictures.