I think what readthenotes1 is trying to say is what I was hinting at in my comment: this administration cannot be trusted to do this properly or in the service of actually making the ATC system better. They're instead doing it because the 1% says that modern == better (which for a safety-critical system is usually not actually true). The proper thing this administration should be doing is to do this as a failover at first but keep the existing ATC system running until the new system is just as safe and as capable as the original, but I get the feeling they won't do that.