1)Combat that works, and that doesnt look like 2 people slapping each other in a girlfight.
2)Item decay. Major item decay. Not it will decay after 100000 uses, or after 2 weeks, but you get into a fight, and you lose 10% effectiveness until its repaired. Or using an axe on a tree will make it slower or use more energy per action, etc.
3)Regional resources that are limited.
4)REAL STATS for items. Not something thats 1% better, but things that have major effects. WITH TOOL TIPS!!
5)Tracking.