While you've said that Sherlock Holmes solves cases through deduction and not "parkour", as you put it, that isn't necessarily the case. While Sherlock Holmes USUALLY uses deduction to solve cases, there are specifically a few instances where that was not the case. Most notably in his tragic fisticuff battle with Professor Moriarty, which lead to widespread reports of his death. Also, in his first case, "A Scandal in Bohemia", he solves it by diguising himself and infiltrating a household.

He disguises himself quite a bit, as I recall, and engages in both fisticuffs and swordplay. But that's not the *point* of Holmes, at least to my mind. The emphasis of the stories is always on his ability to figure out the mystery, not on his ability to chase down criminals and engage them in violent confrontation.

If the reinvention merely plans to include story elements that are often neglected, I'm all for it. But if it plans to "reinvent" Holmes as an action hero rather than as a detective - well, I'd have issues with that.