Add option to strip AAAA but leave A records, so request to particular site goes only through ipv4 (or vice-versa).
Example in PiHole's UI:
[domain.tld] [checkbox to block A or AAAA] [wildcard flag]
And that's my case: My ISP is ipv4 only, and to use ipv6 I'm using Hurricane Electric 6in4 tunnel. So my ipv6 outbound is in another country. And some sites that have both A and AAAA records are frequently shows wrong country. Sometimes it leads to "content is blocked in your country" or "your traffic is suspicious" things. The way to fix this is to write that site's domain in the hosts file with only ipv4 part. But that solution is not cool.
PS: Excuse me for posting it here, but Feature Requests category is not selectable.