Clubs must debate internally as to whether field 1 or 2 (or maybe even 3) teams per grade. Seems from my attending a few tryouts, input from others, and notes on this thread, that the turnouts for tryouts have been decent this fall in Westchester (and Fairfield). Anywhere in the 40-60 range per grade. Obviously that doesn't mean kids don't attend multiple tryouts. But there are still more kids wanting to play who won't find a home.
But not many clubs opt for a 2nd team. Guess it drains resources and lessens the club reputation from their POV.