If anyone ever actually played it, I would agree. But no one does. People don't PvP at low levels at all except in games where the whole thing is based around PvP. And then, you don't have a use for level caps either.LvCaps promote new players who haven't had the opportunity to fully gear out their jobs yet, to be able to participate fairly in PvP.
NOBODY does lv30-50 ballista. If you DO want to do it, there's still the diorama for that. But those caps should be removed from the official match schedule.