Sounds more like a satirical joke than an actual update.
Take the most important fundamental ability that all marines have "Communication", tie it to only one player who every xeno will attempt to capture and perma in an inaccessible spot. Make the role boring as fuck so no one with any level of experience will even place it on low priority so only the most inept players even bother with the role. Then further require them so marines have the fundamental ability to even benefit from what they previously obtained by DEFCON.
Hopefully I am missing something and it turns out to be a great idea but it kinda sounds like the worst possible solution to the lag and DEFCON problem possible.
If lag is this much of an issue I rather they just bloody removed darkness all together and all sorts of other stuff as this is massive loss to fix lag.