the problem with TV/movie medium, is the hollywood wannabes follow a really closed minded and boring mold, being more talk than action,
typically glorifying a single character as the center of the universe (though the games are also guilty of this for the most part),and trying to prove themselves to be poetic narrative composers than actually focusing on matters,
which is the situation, action, travels, violence and survival aspects, not the psychological dissection of the characters and why they do the things they do. The industry is already a cesspool of the usual tropes that waste so much time on exploring the character, instead of their situation, travels, battles and survival circumstances.
a vampire hunter doesn't need their backstory explored, nor their social skills tested to just go on a journey, survive, and slay every threat that gets in their way.
a Castlevania TV show, should be about the journey itself, the violence, the exploration, not delving deep on the characters, with contrived reasons and psychological nonsense that just gets in the way of the objective and what they are best at doing.
but yea due to how the idiots in the TV industry tells stories, now the mainstream are mindless sheep that are dependant on shows/movies force feeding them explanations and reasons for everything, as well as trivial flashbacks and soap operish nonsense that bloat stories, adventure stories in particular, with unnecessary hoopla.
a Castlevania series shouldn't be treated like a soap opera, but more of a life experience that progresses instead of explaining and examining things every step of the way, or between conflicts like some commercial that tries to remind people why the character matters and what they do matters. That stuff is self explanatory. but yea the industry storytelling is so screwed up and really don't know what's best.
on top of that, whether animated or live action, production companies are TOO LAZY with delivering more action scenes, and rather mostly animate the characters mouths to fill most of the show time. it's so much easier to talk than fight, evade, and counter in various ways and using different subweapons strategically and stuff.
so the general TV show is mostly a talk a thon, and that is not suitable for a Castlevania, which are more about the journey, the fighting, the slaying and overcoming survival, than having conversations. Even in groups of hunters, being chatty can draw more attention to them by unseen creatures and stuff and raise the likelyhood of being ambushed. It is smart to hunt in groups, but not smart to be some nosy comedy relief character that tries to learn more about each other, when that is NOT THE POINT of being a hunter.
Very very few in the world would do a Castlevania series right, and fewer would express the authentic natural experience that vampire hunter(s) would go through in a Castlevania worthy adventure.
Also while Castlevania is known for its mostly solo hunters (mostly due to gameplay limitations), it is more natural for a vampire hunter to be accompanied by other hunters, especially considering even Belmonts are human, and the is strength in numbers.
it would be fascinating for the series have a Belmont receive the aid of other hunts along the way, and their contributes and sacrifices would add to the dread and threat level of Dracula's forces and creatures of darkness. They could travel together without prying about each others lives, and viewers could still care about the characters without them having to pull out a pendant with a photo of their relative to invoke artificial pity and emotion towards the character.
but yea who knows if they'll even get half of the things right, it remains to be seen if the character designs are even tolerable. and if they really are committed to delivering a epic vampire hunter(s) journey to and through a castle,
or just settle with cheesy half baked fanservice that's all talk and little action.