I don't watch the canon, so I can't say for specific voice ICness, but I can tell you that I found a lot of his early behavior incredibly puzzling. The first event log, especially. It seemed like you were focusing entirely on the one aspect of his personality that has him being a total ass, which is fine to a point, but it seems to me like there'd be more curiosity to him? He doesn't seem the slightest bit interested in his new surroundings, how he got there, what's really going on, etc. All I saw was how bored, bored, bored, bored he was and how everyone else was sooooooo stupid.

Again, I don't watch the canon so this may be totally on par for the BBC Sherlock, but I can't help but think there must be more to him than that.