To be able reach max level in less then 9 hours without cheating just playing the main story quests(or no leveling).
Collecting alot of skills in order to build cool builds.
No RPG Stats like dexterity and strength.
Magic the gathering skill system.
Storyline that can be finished without frequent gaps between story sections.
Customization ai companions and henchmen
PVP Only Characters
No required or kill 200 style grinding