e.g. ".well-known/avatars" as an alternative/addition to DNS SRV for federated libravatars?

Looking at WebFinger and its avatar link rel I was wondering if one could use a .well-known/avatars or something similar as an alternative/addition to DNS SRV records federated avatars server?

E.g. either add something like:

https://example.com/.well-known/avatars

or

https://example.com/.well-known/avatars-server

which responds with the avatars-server (and maybe port/path) to Well-Known URIs?

Or maybe it would fit better to use RFC 6415's .well-known/host-meta or even WebFinger?