The maxium allowable speed has always been 80 mph, except for the stretch from NORTH POMO to the Absecon Passenger Station. Speed there was 90 mph under Amtrak.
80 is fast enough. Exactly what would be gained by higher speeds other than excessive equipment wear?
Even with the higher speeds, the 11 speed restrictions would still remain in force (unless someone has a method to suddenly turn a 60 mph curve into a 90 mph one). Very little would be gained. The service isn't broken, so why try to fix it?