Is there a geo ip database for ipv6? If people are using ipv6 these things will start to matter.
Though maybe analytics will be the last to move.
How so?
One way would be that it would help identify individuals better since giant NATs will not be as popular. For example, I believe some IBM campuses are often all behind a single IP address.
as nat was only a method of dealing with lack of address space, and not a security measure, hopefully nat will become very rare...
Not really; most OSes now enable ipv6 privacy extensions by default, which means a client will connect with a different IP every hour or so.
At least some of the software designed to detect malicious behavior assumes the ip is in ipv4 format. Example: I'm pretty sure fail2ban doesn't support ipv6, yet.