It would be really cool to see some fairly simple or longer running and difficult quests setup.
However, these can take quite a bit of work...and players often respond with negative attitudes when other people get their hands on shiney stuff. I think that would be cut down if the stuff was done more often, but then we might end up with too much stuff in-game...
It's all about balance. Halloween isn't ages off, eh?
You're right, it is about balance. The problem with quest items is that they can be easy to monopolize by your larger more powerful accounts, or the dude's who never take a break to eat/drink/sleep/get laid. If a system could be setup to similar things such as the Triplex Amulet or items of that nature, that could give even our exploring fun loving noobs (such as myself haha) a chance to earn some really good gear, even if it is just for a week. Halloween isn't ages off... but god forbid we have to wait for holidays. This is time where you're more likely to spend with family anyways. I just wanna bring back some fun into this great game. It's truly a shame to not seeing it thrive like it once did.