Sneakylong
I don't think it would help.
Sub-air systems are designed to keep the grass growing on the greens with ideal soil temperature and moisture. The USGA would turn that shit off in a heartbeat and shave them down to the dirt almost.
It would be like giving a 14-yr-old who's never before gotten behind the wheel of a car the keys to a Lamborghini.
They've simply lost the plot over the years. The further these guys on tour hit the ball, the more extreme they get. And all because they're willing to do all they can to get the winning score north of par.
What happened last year at Erin Hills had everything to do with what played out this year at Shinnecock. It was a gross overcorrection, and it's all because, above all else, they desperately want to preserve the longstanding reputation that their tournament is the most difficult challenge in all of golf, even if their setup goes to extremes and humiliates the players.
Do you honestly think sub-air systems would prevent them from drying out the greens and having them near-death on Sunday?
How would the USGA set up Augusta National in the Masters if it were their tournament? They'd undoubtedly have that place burnt out and brown. They'd probably look into getting sub-air for the fairways so they could turn up the temps and dry the fairways out to firm and fast. +10 would be a winning score there if they were in charge.
They've lost their way. Instead of regulating equipment and keeping the standard the same for their tournament, they've decided to go to extreme setups to combat the distance issue.
Never mind the fact that narrowing fairways and growing the rough would effectively do the same thing.
But since there are a bunch of imbeciles running things there, you get the circus show that the US Open has become.