Is Dracula even going to need to jump to ledges/platform anymore? Dude can just teleport anywhere he wants.
Perhaps teleportation is one of the last skills he recovers?
Glad the pic with the sword was shown, that clears things up quite a bit.
As far as Trevor = Alucard goes, I think I'll buy into that theory for now. While the three games span hundreds of years, I don't think there's enough games for there to be "another" lover for Dracula and another character for the player to become emotionally invested in. When Dracula ultimately becomes "redeemed", I'm expecting Marie's smiling face to beam back at him from the beyond, not two women's. But yeah, it's possible he had a mistress or second love, but I'm gonna guess "no".
That does leave it a mystery on how Trevor transforms into Alucard. There could be some clever plot device to explain this, perhaps involving a mirror.