As usual, ASA is late and trying to catch up. PGF moved 14U and 16U last year to the 1st week (same week as 18G) at the request of college coaches. ASA has never cared about recruiting before and only does now as a means to an end.16GOLD will be held in conjunction with 18GOLD.
The rationale is that college coaches are looking primarily at 16u recruting wise. It is thought that by bringing the best players in both 16 and 18u together at the same site, it will draw the coaches which will draw the players.