In my final year as a class L parent, I'd have to agree that its not as strong as its been in the past, but I think we'll see the usual contenders: Nashua South, Man West and Central, Salem, Keene, Londonderry, and possibly Concord. Alvirne has some pretty talented players, so they may be in the mix. For what its worth, Nashua, Keene, and Londonderry all fielded pretty tough fall ball teams in the wood bat league. Not sure how many of those guys will play high school ball, though.
Since son will be rounding out his high school career at Hollis-Brookline, next year, we'll be keeping an eye on class I.