I don't think you could really make a game like CV64/LoD today, at least not outside of the Indie market. It's got a beautiful unique artstyle and pace you just don't see anymore. As someone else mentioned earlier in the thread one of the best things about these games was just looking at the environments after the enemies have been killed, listening to the wonderful music. Really soaking in the atmosphere and story.
That's something we'd already lost by the time LoI came out, while that is a good game it's much less about atmosphere and feeling like you're really experiencing a haunted Castle, and more about hallways connecting set pieces. Today, when you strip out the platforming and signature Castlevania elements and throw in needlessly long combos and QTEs... it's much much worse.
HOWEVER if we got an upscaled re-release of these games, perhaps with some control tweaks for CV64, I would be very happy. Though it would be tricky to adapt the unique N64 controls to a modern gamepad. Sadly given the negativity that unfairly surrounds these games today I don't think we're likely to see anything like that for a long time if at all.