How would that work, would every authoritative nameserver keep a database of the IP addresses of all the clients that have requested records in the last week? And then hope those clients also run a name server on the same IP, so it can send some kind of DNS NOTIFY when the records change? What about my recursive DNS server on my LAN, which only has an RFC 1918 address? :)

Of course it'd be nice to push changes quickly, but I doubt there is any feasible way to coordinate that on the internet. The next best thing you can do is to lower your TTL in advance.