Vampire Overhaul (ver. 2, OP updated!)

[Chronicpwnage]

There was a lot of enthusiasm for this but unfortunately it's fizzled. I know that admins and coders are busy with real life commitments right now, but I'd like to ask what I can do to help get this idea off the ground. I can sprite stuff and help write flavour text but I don't have any experience with regards to coding.

I am interested in helping this become a reality.
I can probably figure out the code for at least 90% of this!
Lets make it happen.
I'm Chronic on the goonstation discord


I also had a few ideas I think would make this whole concept even better.
Right now, unless you're enthralling someone there's basically no reason to leave a victim alive. You are basically like a changeling where you eat someone and then stuff their corpse in a locker somewhere.

I have three changes I think could make this very different.

First:
Shadow Guise (0 Blood Points, 90 Second Cooldown)
Surrounds your form with an impenetrable shadowy disguise for 30 seconds: You can't be examined and you appear as a black cloaked form with red eyes.
Second:
When you bite someone, blood gushes from the wound easily and feeding is very fast, the first chomp gives you 50 blood and every point from there it pours quickly before slowing down around 150 blood. By the time you reach 150 blood, if you had Shadow Guised right as you found your victim, your Shadow Guise will wear off. 
Third:
Biting doesn't require removing helmet/mask, but takes a few seconds to charge up ("Vlad von Bitesalot bares their sharp fangs!"...."Vlad von Bitesalot sinks their fangs into Hapless Nerd!" so it can't be used as a surprise instastun)

These changes make it much easier for Vampires to be a terrifying, swoop-in-and-steal-your-blood type presence on a station rather than a slightly different changeling. If you choose to be a hit-and-run vampire, there's no disposing of a body, your blood bank can run off to the medbay to recharge for a future feeding, and your cover remains safe regardless. I would even make it so that running around stealing blood this way is more rewarding (that is, faster to gain BP) than fully draining every target.

Thoughts?