Harden seems to be coming back down to Earth. I think he's a fine player, and I hate that the Thunder lost him, but I think the Thunder are still every bit the title contender with Kevin Martin. While Harden had some playmaking ability that Martin does not, the Thunder already have great playmakers in Westbrook, Durant, and to a lesser degree Eric Maynor. And Harden was such a streaky shooter. I think by the end of the season the Thunder will be fully meshed and very dangerous.
I'm more worried about the Lakers adding Phil Jackson than than the Thunder losing Harden.