Re: 301/302

It would seem to me, that if 302 really means "see other" in practice,
then what should be done is change the definition of 302 to "see other",
define 303 as "same as 302" perhaps including the historical reasons,
and define 307 as a temporary redirect.  Deprecating a code that is in
active use is a bad idea.

BTW, all status codes are HTTP/1.x defined.  A proxy cannot do translation
of a status code, so basing a response on the received protocol version
won't work in the presence of proxies.

.....Roy