Lots of folks on both sides of the Obama/Clinton debate predict total chaos in 2012 (if the Democrats lose the election) or 2016. Luckily, 2016 is a ways away, and Democrats are confident about their chances.
But think about it. States will have NO incentive to follow the rules, knowing that at least half their delegations will be seated. The candidates will treat the states like any other state; Remember that Florida, which had half its delegation penalized by the RNC, turned into the victory that essentially sealed the nomination for John McCain.
Nominee-presumptives Obama and Clinton have no incentive to change the calendar -- he needs Iowa and she needs New Hampshire for the general election.