With fishing we could have a new dig command... /dig for worms. hehe. Not a bad idea. people would be able to get some relief from the monotony of farming rats.
Not that original, since EQ, SWG, WoW, and Kels, All have fishing, but it works, right? So why not.
Rest is absolutely necessary, you could have /rest, /camp, and bars, and hotels where rest would be automatic when entering. Another form of regeneration, when battling mobs outside would be foraging for herbs that have healing qualities, this could also restore mana, or magic energy.
And no resting doesn\'t encourage power levelling.
/rest would cause a slower healing rate than the rest, but you would be able to see what\'s going on around you.
/camp would be a place that would be a little safer in hostile territories. Camps would have a timeout. If you left your camp for an extended period of time it would disappear, likewise it would be \"abandoned\" and disappear if you left the zone. Another benefit of camps would be that you could respawn there if you died before it had timed out.
Holiday events would be cool. Or any gm sponsored events in general, these are fun, and make you feel part of a community.