nice step up, selection and choice of possession increase make it more preferable.
it still required an internal image and some options while possessed but improved.
there is a bug which locks the selection (happened to me when changing while already possessed a person)
on another note the possession shouldn't be able to change while your in a body or would have an animation.
as for the new evolution form it works well, and I can see spicy things ahead. Tho I would have liked an forced infection with the tail, like a pin infection.
lastly the water had huge lag spikes when i was swimming so you might need to check theat later
that being said it works and you should be happy with what you have done so far.
Ill be working on my own parasite game later (possibly at the end of this year) so I hope I don't disrupt you're development when I start.