Why are we using ATC prcedures from 25 years ago?
Because the FAA is still using 25 year old technology and the US airspace system in some sectors is attempting to handle more than twice the traffic flow with the same equipment and procedures.
There is the technology and the systems do exist, just not within the FAA ATC realm.
Excited about changing that? Then privatise the system and get rid of the GS16 and above managment. Do you know of any US government entity that operates as a corporation and is profitable?
Get rid of the lardasses and then we can do something. I'm twice as fustrated as you and you can fly away. I have to work these antiquated systems.