Nirth: To be honest it's about maturity of the writing for the lack of a better expression or explanation. The problem is that some themes, like zombies or vampires, but other supernatural stuff too are all attached to pre-conceived notions so it's hard to try and come up with anything original without blowing it over instead of rehashing it but with a better, new style.
I find that the immortality and timelessness aspect of vampires has always been the most downplayed aspect of vampires in vampire movies and yet, in my opinion, it's the most significant aspect of vampires (even before the whole bloodsucking part).
It's always used as a plot element to determine why he shouldn't be with the human girls or why he knows that character from way back when, but little else.
For example, you don't get a sense of the great patience that a being that has lived several centuries and expects to live several more would have or the maturity and vast amount of knowledge that such a being would have accumulated. A vamp that is several hundreds of years old displaying issues that young adults have? Really? Please, think granpa on steroids in a young person's body.
Heck, I'd dig a series where you follow the evolution of a vampire throughout centuries of time (and I'm not talking about flashbacks, I'm talking about a series that starts in the middle ages and end in the present day or even later).
Nirth: For example, just look like at Twilight. I wonder how successful (cash, not critical accalim) it would have been without the cliché romance that attracted so many young girls (or even older).
Yeah, they always go for the teenage girl or young women in her twenties even though they probably wouldn't click at all emotionally.
Nirth: I would prefer if they focus on a deep storyline(s) without stereotypes with actual lore and explanations instead of "it's something mystical" or "unknownable". Supernatural documentary but with mature drama if you will. That is what I would want regardless of theme, even with zombies. Of course trying to pitch that to a capitalistic producer would be almost pointless.
Actually, I find they tend to overplay the lore and downplay the overall storyline.
I'd like more human moments in vamp movies/series and I'm not just talking the caricature of the tortured vamp seeking redemption (c'mon, if he's several centuries old, he'd either have gone over it, comitted suicide or gone completely insane by now).