as much as i hated to craft orange bodors on 3 different chars on the same account, not to mention getting sotoro which is a pain in the rear end, allowing oranges to be archived is just a bad idea.
the point of archiving is to collect your stuff, not to remake a char and reuse it. if you wanna go back into an arena you LEFT already, go make the weapon again since you wanna play the bracket again, simple.
the only oranges i wouldn't mind in archive is the pvp gears, as some brackets are more active than others, hence points can be farmed faster there. and while i still believe that effort should be put in on each individual character, i will attest to the fact that it's quite tedious and allowing pvp gear to be archived wouldn't be so bad since you put in effort either way.
but as to a +15 oblivion rod....Hard no. you already trolled 40 arena, now you want to do it again? pft.