The amount of NTP traffic is indeed significant, and the traffic seems to be increasing.
My “pie in the sky” goal for NTP would consist of three steps:
- ISPs set up their own NTP servers
- ISPs start using DHCP option 42 to disseminate the NTP server information to their clients
- Devices use the NTP server information acquired via DHCP by default
Obviously the above won’t entirely eliminate the need for the pool, and these changes won’t happen overnight.