Statuettes- osrs gold statuettes, introduced with the new bounty hunter system, gave people hope for good loots. Estimated potential- It was made available with the new bounty hunter methods. It gave players an indication of their chances to earn decent loot. PvP realms were created to replace the bounty hunter that used to have multiple worlds, this number has now been reduced to only a handful of.
Hotspots - Areas that offer loot that is 'kinder' to players. Clan WarsClan Wars - A few of the very first minigames available that were f2p-based, replacing big wilderness fights for clans. They used to be massive until jagex fail updated it. The new Bounty Hunter- Jagex introduced a new method to create pk.
FFA arenas The update to FFA arenas is the most ineffective thing in Runescape. It came in an update that ended clan wars forever. It managed to reduce the amount of players in the arena and make it a boring experience. The arena is extremely dangerous. Request assistance - This was created because we couldn't trade items in order to create new ones, e.g. smithing armor to lower levels, air/law/etc running.
Capped trading- This is straightforward and will likely be rendered ineffective if changes are made. Gravestones were created to ensure that people would not trade in the event of their death and let them retrieve their possessions. DA tournaments- Was created to bring back staking, fails badly even after updates. Revenantswere originally designed to replace pkers but people were dissatisfied with their power. They are actually quite poor. However, they are too powerful in f2p.
Jagex can delete content. The old Bounty Hunter- A crater was created out of space, crushing all wildy old spots of pking like the big bone and the tiny bone yard.
PvP worlds- They've reduced pvp worlds over time to around two. DA tournaments- The previous one was removed, but replaced by some shizzlety crap that fails just as much. The changes made it difficult to conduct certain activities. Player owned shops- Shop sections of forums, businesses use to thrive money making for a lot of people. buy old school runescape accounts can be a great method for people to earn money, natures laws, laws, airs and so on.