While Ichabod is a reinvented character, he's not modern yet. As I said before, the biggest difference for me is the fact that he's no longer being portrayed as cowardly, but neither was Johnny Depp's interpretation. This version's quirkiness comes more from him being out of place due to time displacement rather than being a nerd (which I think held true for most previous versions including Depp's and Jeff Goldblum's). From what I've seen of both Elementary and the new PBS version of Sherlock Holmes, those characters have been reinvented, so that they've always existed in the present with no reference to the past and the original concept of Holmes. Part of the fun of the new series is watching Ichabod's adjustment to modern times. Unlike a lot of time travelers, his reactions, while humorous, are not over the top, they are rational but still with a sense of awe.