What were people permitted to do to each other before that they are not allowed to do now?
-Guarded items.. back then, what you drop was exposed to thievery. Now it's used to 'enhance' carrying capability.. Players get inventory full but still manage to overload temporarily by 'putting things aside' while they dig for example. Some use it to place a Point Of Sale stand in public (very useful) but I dunno if this was part of the intention. I understand that there were many issues with the furnaces/crashes.. chars lost many items when that happened.
-Death rule/challenge/suicide.. People were abusing death realm for it's ability to respawn w/no penalty and therefore move faster between maps. Now no one wants to die to avoid penalty. I believe once a challenge is accepted, death must be considered as is. Once players were given a second chance, challenge became a game within the game.
Maybe these are just a couple examples.. more things used to happen but those were bug issues (which in no way mean less fun). Still, the effect of those bugs could be considered as 'actions', like the inventory auto-drop when full.. I know it must have been a nightmare for Devs and GM's but sure the effect was pure fun.
I don't mean these issues should return to their prior status. Maybe some other things when implemented may replace those actions (pickpocket/lockpicking)..
On another side, I've seen sporadic attacks on mining areas performed by GM's.. Everyone enjoys those, even if they die.. but these actions are limited to the GM's. Players can't do that.. People take things according to their source.. if it was a GM, cool, fun, yeah, hooray.. I can't imagine the negative comments if a player's character ever attempts something like that. Still, I believe there should be some actions doable w/o agreement, comment, blah..blah.. Every single time such things happened, the following was pure RP joy!
Now, you may say I enjoyed those for I could have been mostly a perpetrator.. well, no!.. those rules applied for us all.