It's just too weak for words, really. There's about 99 different ways that this sucks but I'm too weary of the whole thing anymore to even work up a good rant about it. It cheapens Obi-Wan's legacy; it defies all common sense and reasonable suspension of disbelief; it further reinforces the absurd trend that only good guys die on this show and villains just multiply, etc, etc.
It's just crass revisionism of the worst variety. Sorry that Lucas created such a cool character and then immediately killed him off, but that's the way the ball bounced. Deal with it. Need to pump the fanboy well for some love? Fine, delve into his backstory. Do some flashback shiite, whatever. But COME ON - dude was severed in two fing pieces! And dropped down an enormous nuclear silo or whatever that thing was. I mean , done. End of story.
Just stupid, stupid, stupid.