I love McKellan and this is at least an interesting new take on the character. I don't think a show or film featuring a regular young Sherlock is likely to compete with Moffat's television show right now, so if they want to cash in on the Sherlock fad I'm glad they're taking a different spin on it.
I'll likely see this, if it gets good reviews. I'm definitely interested. I refused to watch all 3 Hobbit films, so I need a McKellan fix at this point.
