FYI: Showcasing is now done at 16u. I see that point above and I see lots of arguing elsewhere about not allowing commits into some of the 18u tourneys, but the college coaches are looking younger, even at 14u. Even DIII are not necessarily waiting either!
Used to be you could field an 18u with several 16s and get looked at, but no longer seems to be (in my limited purview out in softball boondocks).
The 18u players have already committed. And going younger helps get the coach around before those pesky recruiting rules, too.
FYI Showcasing in Southern California is still "mostly" at 18U. (not all)
Just go to the link provided and look at the number of 16U teams compared to 18U teams attending the January Surf City Showcase.
16U Division
16U Division
18U Division
18U - 18Gold Divisions
I saw most of the recruiters at the main fields of the 18U division.
Recruiters
Just sayin.