It also overlaps with Triple Crown USA Nats, which draws a lot of top teams in the 14U-18U age groups. TCS being in NYC again last year probably kept some top SoCal teams away. Here are the results from 2016 - https://www.triplecrownsports.com/Classic/EventResults/event_results2.asp?tournyid=7430&ResultsTournyId=7057
I expect more will go to Austin, Texas this year.
The team list is already quite long with many great teams. It should be very good this year.
We have done TCS in Austin the last two years and have had a blast. There is a lot to do around the Austin area along with some great places to eat. The only thing that sucks is the traffic.