1) Semi-casual: about 3 hrs/day
2) Combat system: Very much interactive.
3a) Get rid of SPAM Permanently!
3b) Random content/traps/monsters/random encounters. Make ALL outdoor areas completely random where monsters are.
3c) Create other ways to gain exp other than the continual grind. Start a new character for the 10th time and have do the same quests over and over and over again to get to where you were.