We have an April Use year, and for us it has turned out that every February we hold our breath and hope we won't have to cancel our vacation plans. There would have been no way for us to use points that went into holding before the beginning of our next year. It's worked out, and now that DH is finally retiring from HS teaching we should have more flexibility.
For us an August use year (think Food and Wine) or December (Christmas and then Feb vacation) would have been much better.