The problem with combining events is that is that it precludes one from racing in both the F18 NAs and the F16NAs. I've also heard some of the N20 guys grumbling because they want to do both F18s and N20s. Combining these events will reduce the turnout in each class.
Realistically, how many F15 guys sail F18 also?
Probably more than you think. . . Racine 2010 is already stirred up a lot of interest and commitments.
Fall is a busy time of year and there are a lot of events going on. It's hard to get that many days off for many folks and they must choose their event. Also, November is the Cuba run, and I'm kidnapping Jody to sail it with me, so there . . . :P