"Two thousand and one" is long-winded enough, but it will get worse when we reach (say) 2027. What happened last time around? The Battle of Hastings was fought on that memorable date, "ten sixty-six".
Should we not therefore speak of "twenty-oh-one"? Admittedly "twenty hundred" will initially sound rather strange. Perhaps the Millennium Commission can manage to reach a decision on this one at least.