TOP: The ability to RP your character as much or as little as you like.
TOP: Unique items.
TOP: Can skip a turn or two and still be able to catch up on what was missed.
FLOP: Wishing scrolls were a tad more common, so one could actually train their magic skill.
FLOP: Declining player base
FLOP: Being paranoid that there is always a set of multies in one or more of the realms I play in.