Ignoring MASSIVE implications makes no sense
Just like Tony Stark with his casual, sudden 'nanobots tech' that should change the world DRASTICALLY, if you think about all the things such things could do for healing and damaging - new type of weaponry based on those would render old weapons completely obsolete, plus they could heal any illness, acting like 'transporters' in some TV shows that should be able to make life eternal and heal anything and everything, since they RE-ASSEMBLE your whole damn body from energy and 'patterns' every time you transport (so why re-assemble 'ill bits', why not create a perfect, healthy body every time? NO REASON!)..
Ok, that was a run-on sentence that should be shot.
I am trying to say that movies OFTEN, way too often do this; they create some ONE-shot tech that's used only once, then forgotten about, without realizing the massive implications it would have on the world, characters, story, and so on and so forth.
I am not even going to compare the 'Bushman Prank' videos, where women scream like someone being slaughtered just because a man moved his hand ever-so-slightly, to this woman's 'I can see ANY grotesque monster and torture them to death and feel nothing but 'cool' and 'I can be thrown into ANY scary situation and I will never feel even a shred of fear on any level, or even be surprised'-style of handling things.
I want to talk about this 'a woman creates "CURE" (for something people WORK to get, so is it good or bad??) the first day (OK, it might have been the first week or whatever, but still, pretty damn ridiculous), because OF COURSE these movie coincidences and plot contrivances NEVER END, so she just _HAS_ to be a 'blood specialist' (which apparently means she can just use some chemicals to create cures for things, while the rest of the world can't do anything like that).
I mean, this should be HARDER thing to cure than cancer, so we can safely assume this woman could cure cancer if she wanted and there wouldn't be any consequences or implications to talk about or handle at all.
Also, haven't people throughout history, including blood specialists (surely she can't be the ONLY one ever) tried to create a cure and failed, time and time again? Hasn't Blade ever been to a damn hospital, asking about these things, basically trying to hire someone to create a cure? He doesn't have to talk about vampires, just 'can you reverse this mutation process' or whatnot, he can keep it purely technical and chemical and whatnot.
I mean, if it's THAT EASY to heal, wouldn't any random blood specialist be able to create a cure for Blade for a little bit of money or whatnot? This bit makes absolutely no sense that Blade and Whistler (what kind of name is this anyway?) wouldn't have thought of this... EVER.
However, even THAT ridiculousness isn't yet reaching the core point I want to make.
How about the implications of a 'working cure' for the whole Blade story? It's not just one or two people in this story that this thing would affect.
Think about all the things it absolutely would affect. Anyone 'innoncent' (this movie is trying HARD to make biology dictate morality, and thus justifying what is actually RACISM - if your body is 'vampiric', then your soul must be evil, so you can be murdered without questions or trial. There could've been some innocent victim-types in the 'rave' club, but Blade murders people without questions
This kind of thinking differs from racistic 'your body dictates that you are worthless/evil/sub-human'-type evil thinking.. HOW, exactly?)
If there's a working cure suddenly, and someone that can create such concoctions (what ELSE might she be able to create/do, given enough time?), wouldn't this be a GAMECHANGER?
Anyone that was bitten, can now be reverted back to what and who they were. Does Blade still choose to rather kill them?
What about those people that WANT to become humans and do NOT want to be addicted to the 'thirst'? BTW, does it have to be from bipedal entities, isn't all blood pretty much the same, as it serves the same function? The difference between humans and animals are found on the soul / intelligence / personality / and so on, not as much on the purely biological and bodily side.
If the brain structure of a gorilla supported it, I am sure human beings could easily incarnate into gorilla bodies. So is gorilla blood going to be that much different? I mean, blood is just fluid of certain type, it has nothing to do with intelligence, soul or personality, there's no 'advanced blood' and 'primitive blood', there's just 'blood'.
(Of course there are different types, and animal bodies -are- different, and so on, but for THEIR intents and purposes, why would that matter, and how? Not explained)
In any case, Blade should be in a completely new situation now, where he can't just murder anyone he wants with that clunky, motorized wannabe-katana, without considering that hey, this guy/gal might be a victim and WANT to turn back to humanity.