Changing standards would bring considerable potential for confusion.
And to re-iterate a point from the same discussion in the GOUT-sync thread. Switching to a wildly different standard is one thing, and IMO a fairly tolerable thing. Users who inadvertently use a wrongly-synced audio or subtitle track will quickly realize the problem and be able to correct it. Switching to a standard that’s extremely similar to the previous standard can result in a situation where ten people watch a film with the same bad audio sync, and only one person kinda sorta notices something seems off. We already ran that experiment when Harmy’s Jedi 1.0 used PAL video frames and NTSC audio. Most users and Harmy himself didn’t notice a problem at all, but a few people thought they were going nuts.
I’m not saying the change shouldn’t happen. But multi-project coordination might have been a consideration. Now it’s just weird.