Well, I appreciate where you're coming from (Sumac).
Of course when you learn that much more of a personality and their background you have more to work with, indeed they can still be 'bad-ass' (there are numerous comic-book heroes such as an example) . . . but I’d still argue the mystique can fade, interest can wane. Death may never be the same again for you if you’ve invested some thought and imagination into him, and the powers that be turn him into a character called Zobek. Some fans are going to turn away from that, and the parallel universe/reboot isn’t going to matter too much because the seeds have been planted. You have to accept that.
I’m not saying it’s right or wrong. Admittedly, the story is probably still in its infancy. I’m indifferent to Zobek’s character, respect that work has gone into the character, and I actually appreciated and loved the Dracolich transformation and fight. But I can completely see why it rankles some hereabouts.
God only knows the outcry if Alucard appears in the next game as Nikolai the Black: a modern-day mobster from Ukraine, dressed in a trenchcoat with a blonde mane of hair. Unlikely and in the extreme perhaps, but even the smallest change will have a good portion of fans calling such a change “shitty”.