If an item is listed/sold/made available as a 'limited' item, then no, it shouldn't be made available again, elsewise. Sometimes they do say that they reserve the right to make them available again, but I don't think that always happens? And even though I don't have these things, if I was one of the people who bought/worked towards something that was exclusive, to have it eventually become not-exclusive would make me upset, and reasonably so.

Things like primal mounts were never exclusive - and they make them easier, later.

Things like the 1.0 items show that someone was there, put in that time and work. I want tattoos, sure, but only if they're distinguishable, because I understand why 1.0 players want their trophies, and I don't begrudge them.