Many often wonder what the Devs were thinking when they brought out things like Bushido's 80 damage crits and WoD's 90 damage hits and here's what I think:
Dev members keep their employers happy by developing expansions that sell. In order to assure the successfulness of this endeavour, Devs put in these deviously overpowered skills, abilities, and ways to horde cash (bottle quest?) and items purposely to all-but force customers to buy the expansion for every account they own to stay on a fair playing ground with everyone else. When a long lapse of time finally passes, Dev turns off the overpoweredness, but the deal is done; we can't send back these purchased expansions even if we only bought them for that overpowered reason that has now ceased to exist.
Maybe shrewd businessing, but it's very effective.
(This is just my opinion on the matter)