It is actually a LOT HARDER to adjust game balance and cheating issues than a lot of people think. MPKing is tricky because people got "MPKed" by mistake all the time like Summoners and Beastmasters got a bomb exploded over a PT by mistake, or new players panicking and zoned / trained a goblin over another camp etc. Changing monster behavior too much will destroy game balance and make the game "too easy."
Secondly, there is never a game balancing or change can please everyone. Heh, I am sure when SE banned a lot of botters and mpkers over last two "Big Bans" are probably related why SE got DDOSed all the time.
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Amanada (Cerberus-Retired) (aka MaiNoKen/Steven)
-- Thank you for the fun times in Vana'diel
Art for the sake of art itself is an idle sentence.
Art for the sake of truth, for the sake of what is
beautiful and good — that is the creed I seek.
- George Sand
A designer knows he has achieved perfection,
not when there is nothing left to add,
but when there is nothing left to take away.
- Antoine de Saint-Exupéry