I'm honestly expecting a forth sibling to turn up next week (why does everyone stop at three?). Watson to be dead but Sherlock having conversations with him and maybe a flying car.
You know, I actually kinda agree with soupytwist. I did like when they did an international politics/terrorism episode with S2E1, but then we had more international politics, secret agents and all in S3 and S4E1. They did it once and it worked big time, but they kept delving into it, and I just don't think it works anymore. I also think the show got too much into personal drama between John, Sherlock and (now dead) Mary—and with introduction of Holmes sister I think the personal aspect is going to be developed even further)—while neglecting the aspect which I loved most about this show, which is Sherlock displaying actual cunning and detective skills and solving actual cases.
I know that me not liking Mary's character at all didn't help the situation, but now that she was dead, I kind of expected the show to maybe get back on the level of S1/S2, and it didn't happen for me with this episode. I never thought I would say it after waiting for S3 so eagerly, but I think the show has become a bit tiresome for me. It's still entertaining, but it's not something I would recommend my friends anymore, nor it's something I'll go out of my way to watch by any means.
I frankly think The Blind Banker is the worst episode out of first six, but I'd gladly take another Blind Banker over latest episode.