People should admit that IPL is way too huge to ignore now. And whatever may be the intentions, it sure brought so much international exposure to the young Indian cricketers. And Kohli should play in IPL where he gets a lot of practice against several intentional bowlers and also will get a chance to brush up his captaincy skills a bit more. So do the other Indian cricketers. IPL is not just a bane to the Indian cricket, it has it's uses too.
And about the series loss, the record will have to be broken someday. A team can't keep winning series after series, that's impossible. And that too against a strong T20 side like New Zealand without two of our premier players, it was kind of expected.
Line moves with the batsman. That's the rule umpire followed for that decision. DK was too far across that even he crossed the original wide line to play that ball. If he stayed at the stumps and umpire didn't call that a wide, then it would have been a poor call.