I like legacy. I'd say "seasoned" except people would confuse it with seasonals. Ripe? Back-issue? What do they call old comics... archive editions?
Oh yea, Dcuo term " not endgame content" and " endgame content". Should be label differently it confusing .
It does make sense, but I have slight PTSD from hearing the Berlanti-verse use "legacy" about every third or fourth word, LOL. It was like he got it in a word-a-day calendar and made all of the writers' rooms flog it to death.